1
|
Yang Q, Li C, Hu J, Hou X. Ultrasensitive determination of selenium in water and food samples by ICP-MS: UiO-66-NH 2 for preconcentration and direct slurry hydride generation. Anal Chim Acta 2023; 1283:341901. [PMID: 37977772 DOI: 10.1016/j.aca.2023.341901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 10/01/2023] [Accepted: 10/10/2023] [Indexed: 11/19/2023]
Abstract
BACKGROUND Selenium is an indispensable microelement for humans and food is the main source of selenium intake. As one of the best techniques for the determination of selenium, inductive coupling plasma-mass spectrometry (ICP-MS) features some unique advantages, such as wide linear range and high sensitivity. Nevertheless, it still remains a challenge to achieve the accurate and high sensitivity determination of ultra-trace selenium in food samples by ICP-MS owning to the high first ionization energy of selenium and interferences from sample matrices as well as isobaric interferences. RESULTS In this work, UiO-66-NH2 (metal organic framework, MOF) was fast synthesized by microwave method and employed for the preconcentration of ultra-trace selenium with an adsorption efficiency of nearly 100%. The selenium-adsorbed MOF was collected by filtration, and then simply converted to slurry for in situ hydride generation (HG) for sensitive detection of selenium by ICP-MS. Various factors affecting the adsorption of selenium by the MOF (including pH, adsorption time, and amount of MOF) together with main parameters of hydride generation (including concentrations of HCl and NaBH4) were carefully evaluated. Experimental results show that effective matrix separation can greatly reduce interference, with an excellent detection limit of 1 ng/L. The practicability and accuracy of this method were successfully confirmed by the determination of trace selenium in several food samples. SIGNIFICANCE UiO-66-NH2 (MOF) was used as an effective adsorbent for the preconcentration of selenium prior to direct slurry sampling HG-ICP-MS determination. Direct slurry sampling avoided additional elution procedures and was conducive to eliminating matrix and isobaric interferences. High sensitivity and anti-interference determination were achieved for determination of ultra-trace Se in complex food samples.
Collapse
Affiliation(s)
- Qing Yang
- Key Laboratory of Green Chemistry & Technology of MOE, College of Chemistry, Sichuan University, Chengdu, Sichuan, 610064, China; College of Chemistry and Material Science, Sichuan Normal University, Chengdu, Sichuan, 610068, China
| | - Chenghui Li
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, 610064, China
| | - Jing Hu
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, 610064, China
| | - Xiandeng Hou
- Key Laboratory of Green Chemistry & Technology of MOE, College of Chemistry, Sichuan University, Chengdu, Sichuan, 610064, China; Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, 610064, China.
| |
Collapse
|
2
|
Xia YY, de Seymour JV, Yang XJ, Zhou LW, Liu Y, Yang Y, Beck KL, Conlon CA, Mansell T, Novakovic B, Saffery R, Han TL, Zhang H, Baker PN. Hair and cord blood element levels and their relationship with air pollution, dietary intake, gestational diabetes mellitus, and infant neurodevelopment. Clin Nutr 2023; 42:1875-1888. [PMID: 37625317 DOI: 10.1016/j.clnu.2023.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 07/30/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023]
Abstract
BACKGROUND & AIMS Exposure to a range of elements, air pollution, and specific dietary components in pregnancy has variously been associated with gestational diabetes mellitus (GDM) risk or infant neurodevelopmental problems. We measured a range of pregnancy exposures in maternal hair and/or infant cord serum and tested their relationship to GDM and infant neurodevelopment. METHODS A total of 843 pregnant women (GDM = 224, Non-GDM = 619) were selected from the Complex Lipids in Mothers and Babies cohort study. Forty-eight elements in hair and cord serum were quantified using inductively coupled plasma-mass spectrometry analysis. Binary logistic regression was used to estimate the associations between hair element concentrations and GDM risk, while multiple linear regression was performed to analyze the relationship between hair/cord serum elements and air pollutants, diet exposures, and Bayley Scales of infant neurodevelopment at 12 months of age. RESULTS After adjusting for maternal age, BMI, and primiparity, we observed that fourteen elements in maternal hair were associated with a significantly increased risk of GDM, particularly Ta (OR = 9.49, 95% CI: 6.71, 13.42), Re (OR = 5.21, 95% CI: 3.84, 7.07), and Se (OR = 5.37, 95% CI: 3.48, 8.28). In the adjusted linear regression model, three elements (Rb, Er, and Tm) in maternal hair and infant cord serum were negatively associated with Mental Development Index scores. For dietary exposures, elements were positively associated with noodles (Nb), sweetened beverages (Rb), poultry (Cs), oils and condiments (Ca), and other seafood (Gd). In addition, air pollutants PM2.5 (LUR) and PM10 were negatively associated with Ta and Re in maternal hair. CONCLUSIONS Our findings highlight the potential influence of maternal element exposure on GDM risk and infant neurodevelopment. We identified links between levels of these elements in both maternal hair and infant cord serum related to air pollutants and dietary factors.
Collapse
Affiliation(s)
- Yin-Yin Xia
- Department of Obstetrics and Gynaecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China; Department of Occupational and Environmental Hygiene, School of Public Health, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China; Mass Spectrometry Center of Maternal Fetal Medicine, Chongqing Medical University, Chongqing, China
| | - Jamie V de Seymour
- School of Sport, Exercise and Nutrition, College of Health, Massey University, Auckland, New Zealand
| | - Xiao-Jia Yang
- Department of Occupational and Environmental Hygiene, School of Public Health, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Lin-Wei Zhou
- Department of Obstetrics and Gynaecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yue Liu
- Department of Obstetrics and Gynaecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China; Department of Occupational and Environmental Hygiene, School of Public Health, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China; Mass Spectrometry Center of Maternal Fetal Medicine, Chongqing Medical University, Chongqing, China
| | - Yang Yang
- Department of Obstetrics and Gynaecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China; Mass Spectrometry Center of Maternal Fetal Medicine, Chongqing Medical University, Chongqing, China
| | - Kathryn L Beck
- School of Sport, Exercise and Nutrition, College of Health, Massey University, Auckland, New Zealand
| | - Cathryn A Conlon
- School of Sport, Exercise and Nutrition, College of Health, Massey University, Auckland, New Zealand
| | - Toby Mansell
- Molecular Immunity, Murdoch Children's Research Institute, Melbourne, VIC, Australia; Department of Paediatrics, University of Melbourne, Melbourne, VIC, Australia
| | - Boris Novakovic
- Molecular Immunity, Murdoch Children's Research Institute, Melbourne, VIC, Australia; Department of Paediatrics, University of Melbourne, Melbourne, VIC, Australia
| | - Richard Saffery
- Molecular Immunity, Murdoch Children's Research Institute, Melbourne, VIC, Australia; Department of Paediatrics, University of Melbourne, Melbourne, VIC, Australia
| | - Ting-Li Han
- Mass Spectrometry Center of Maternal Fetal Medicine, Chongqing Medical University, Chongqing, China; Department of Obstetrics and Gynaecology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China; Institute of Life Sciences, Chongqing Medical University, Chongqing, China.
| | - Hua Zhang
- Department of Obstetrics and Gynaecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China; Mass Spectrometry Center of Maternal Fetal Medicine, Chongqing Medical University, Chongqing, China.
| | - Philip N Baker
- College of Life Sciences, University of Leicester, Leicester, United Kingdom
| |
Collapse
|
3
|
Zhang M, Pan D, Jin B, Zheng R, Xuan Y. Development of a certified reference material for accurate determination of the leaching of Pb and Zn in solid waste. Anal Bioanal Chem 2023; 415:6355-6362. [PMID: 37603084 DOI: 10.1007/s00216-023-04912-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 07/31/2023] [Accepted: 08/09/2023] [Indexed: 08/22/2023]
Abstract
Certified reference materials (CRMs) with high accuracy and traceability play a significant role in the calibration of equipment and validation of analytical methods. However, there is still a lack of suitable solid waste CRMs for quality assurance and quality control. Thus, a CRM (GBW(E)085538) was developed for accurate determination and reliable measurement of the leaching of Pb and Zn in solid waste according to the requirements of ISO 17034 and the recommendations of ISO Guide 35. This study describes the steps performed for the development of the CRM. These steps include material preparation, homogeneity, and stability during transport and storage, assignment of certified values, and their uncertainties. The material was dried, ground, sieved and well-mixed, and the final bulk material was bottled in 1 kg portions. Analytical techniques like inductively coupled plasma-mass spectrometry (ICP-MS), inductively coupled plasma-optical emission spectrometry (ICP-OES), and flame atomic absorption spectrometry (AAS) have been used for the characterization of property values. Concurrently, an inter-laboratory comparison study involving 9 qualified laboratories was implemented to support the certification study. The certified values of Pb and Zn were (4.66 ± 0.21) mg/L and (2.95 ± 0.14) mg/L with 7-month stability.
Collapse
Affiliation(s)
- Menghuan Zhang
- Zhejiang Huakun Geological Development Co., Ltd, Wenzhou, 325000, China
| | - Dajian Pan
- Zhejiang Huakun Geological Development Co., Ltd, Wenzhou, 325000, China
| | - Bi Jin
- Zhejiang Huakun Geological Development Co., Ltd, Wenzhou, 325000, China
| | - Ruru Zheng
- Zhejiang Huakun Geological Development Co., Ltd, Wenzhou, 325000, China
| | - Yuzhi Xuan
- Zhejiang Huakun Geological Development Co., Ltd, Wenzhou, 325000, China.
| |
Collapse
|
4
|
Abed Altuwaijari HN, Farajzadeh MA, Afshar Mogaddam MR, Sorouraddin SM. In-situ formation of a solid adsorbent for the extraction of some metal ions from crude oil before their determination by microflow nebulizer inductively coupled plasma-mass spectrometry. Talanta 2023; 257:124378. [PMID: 36858012 DOI: 10.1016/j.talanta.2023.124378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 02/12/2023] [Accepted: 02/14/2023] [Indexed: 02/25/2023]
Abstract
The presence of heavy metals in crude oil can create different problems on the oil processing and devices as well as pollution of the environment. Establishment of sample preparation methods for the extraction of metals from crude oil is the bottleneck of a successful determination method due to high hydrophobicity and complexity of crude oil matrix. In this study, a dispersive solid phase extraction procedure was developed for the simultaneous extraction of sixteen metal ions based on in-situ formation of an adsorbent in the sample solution. For this purpose, a suitable amount of dithiooxamide was dissolved in an organic solvent and was injected into the sample solution. By this action, dithiooxamide was re-precipitated in the sample solution and adsorbed the ions. The solid particles were separated and then the ions were eluted by a few microliters of choline chloride: 5-amino-8-hydroxyquinoline deep eutectic solvent under sonication. The presented method was validated and broad linear ranges (7.56-50000 ng g-1) were obtained for calibration curves with coefficient of determination ≥0.992. Acceptable limits of detection (0.003-2.32 ng g-1) and quantification (0.009-7.56 ng g-1) were achieved. Good precision (relative standard deviation less than or equal to 4.3% for intra and inter-day precisions) and acceptable extraction recoveries (66-91%) were also obtained. Seven crude oil samples were analyzed and ten metal ions were determined successfully. The method was compared with the methods reported in literature and it was found that the data obtained by this method were reliable and accurate.
Collapse
Affiliation(s)
| | - Mir Ali Farajzadeh
- Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran; Engineering Faculty, Near East University, 99138, Nicosia, North Cyprus, Mersin 10, Turkey.
| | - Mohammad Reza Afshar Mogaddam
- Food and Drug Safety Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | | |
Collapse
|
5
|
Li S, Liu R, Wu Y, Liang R, Zhou Z, Chen J, You Y, Guo P, Zhang Q. Elevated serum lead and cadmium levels associated with increased risk of dyslipidemia in children aged 6 to 9 years in Shenzhen, China. Environ Sci Pollut Res Int 2023:10.1007/s11356-023-27335-0. [PMID: 37148513 DOI: 10.1007/s11356-023-27335-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 04/26/2023] [Indexed: 05/08/2023]
Abstract
Exposure to heavy metals can influence on metabolism, but studies have not fully evaluated young children. We investigated the association between levels of serum lead (Pb), cadmium (Cd), chromium (Cr), and arsenic (As) and risk of dyslipidemia in children. A total of 4513 children aged 6 to 9 years at 19 primary schools in Shenzhen were enrolled. Overall, 663 children with dyslipidemia were matched 1:1 with control by sex and age, and levels of serum Pb, Cd, Cr, and As were detected by inductively coupled plasma-mass spectrometry. Demographic characteristics and lifestyle were covariates in the logistic regression to determine the association of heavy metal levels with risk of dyslipidemia. Serum Pb and Cd levels were significantly higher in children with dyslipidemia than controls (133.08 vs. 84.19 μg/L; 0.45 vs. 0.29 μg/L; all P < 0.05), but this association was not found in Cr and As. We found significant upward trends for the odds ratios (ORs) of dyslipidemia associated with increasing quartiles of Pb and Cd levels (highest quartile of serum Pb OR 1.86, 95% confidence interval (CI) 1.46-2.38; Cd OR 2.51, 95% CI 1.94-3.24). Elevated serum Pb and Cd levels were associated with increased risk of dyslipidemia among children.
Collapse
Affiliation(s)
- Shufan Li
- Department of Preventive Medicine, Shantou University Medical College, No. 22, Xinling Road, Shantou, 515041, Guangdong, People's Republic of China
| | - Ruiguo Liu
- Department of Preventive Medicine, Shantou University Medical College, No. 22, Xinling Road, Shantou, 515041, Guangdong, People's Republic of China
| | - Yueyang Wu
- Department of Preventive Medicine, Shantou University Medical College, No. 22, Xinling Road, Shantou, 515041, Guangdong, People's Republic of China
| | - Rimei Liang
- Department of Preventive Medicine, Shantou University Medical College, No. 22, Xinling Road, Shantou, 515041, Guangdong, People's Republic of China
| | - Zhijiang Zhou
- Department of Preventive Medicine, Shantou University Medical College, No. 22, Xinling Road, Shantou, 515041, Guangdong, People's Republic of China
| | - Jiaqi Chen
- Department of Preventive Medicine, Shantou University Medical College, No. 22, Xinling Road, Shantou, 515041, Guangdong, People's Republic of China
| | - Yingbin You
- Baoan Central Hospital of Shenzhen, No. 233, Xixiang Section, Guangshen Road, Baoan District, Shenzhen, 518102, Guangdong, People's Republic of China
| | - Pi Guo
- Department of Preventive Medicine, Shantou University Medical College, No. 22, Xinling Road, Shantou, 515041, Guangdong, People's Republic of China
| | - Qingying Zhang
- Department of Preventive Medicine, Shantou University Medical College, No. 22, Xinling Road, Shantou, 515041, Guangdong, People's Republic of China.
| |
Collapse
|
6
|
Sommer K, Sperling M, Karst U. Species-dependent interaction of Gd-based contrast agents with humic substances. Chemosphere 2022; 300:134528. [PMID: 35427668 DOI: 10.1016/j.chemosphere.2022.134528] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 03/30/2022] [Accepted: 04/03/2022] [Indexed: 06/14/2023]
Abstract
In this study, model experiments regarding species-dependent differences in the interaction of gadolinium-based contrast agents (GBCAs) with humic acids as potential binding partners in the aquatic environment are conducted. For this, the Gd content of different weight fractions obtained via ultracentrifugation of incubation solutions of humic acids with a linear (gadodiamide) and a macrocyclic GBCA (gadobutrol) were analyzed via inductively coupled plasma-mass spectrometry (ICP-MS). This enabled the fractionation of Gd-humic acid adducts and intact GBCAs, since Gd bound to macromolecules would be present in the macromolecular fraction of the filter residue while the low molecular weight Gd species can pass the filter with the filtrate. The Gd concentration in the different weight fractions was determined and a different reaction behavior for the examined GBCAs was observed. 73% of the total Gd amount was present in the macromolecular fraction of the linear GBCA compared to 0.41% in case of the macrocyclic GBCA. Speciation analysis of the macromolecular fractions by size exclusion chromatography-UV-ICP-MS confirmed that Gd-humic acid adducts were formed in case of the linear gadodiamide, but not with the macrocyclic gadobutrol. The findings of this study suggest that humic substance was able to react with the linear GBCA while the macrocyclic GBCA remained stable. Since free Gd ions are toxic, the question remains whether the humic acid bound Gd can be remobilized or if subsequent reactions with other molecules can take place. Furthermore, the persistence of macrocyclic GBCAs towards the humic substances indicates the potential accumulation of these compounds in the environment. However, more experiments regarding other binding partners and long term studies are needed to assess their ultimate fate after their release into the environment.
Collapse
Affiliation(s)
- Karolin Sommer
- Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstr. 48, 48149, Münster, Germany.
| | - Michael Sperling
- Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstr. 48, 48149, Münster, Germany; European Virtual Institute for Speciation Analysis (EVISA), Corrensstr. 48, 48149, Münster, Germany.
| | - Uwe Karst
- Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstr. 48, 48149, Münster, Germany.
| |
Collapse
|
7
|
Cancela PG, Quiñónez NG, Corte-Rodríguez M, Bettmer J, Manteca A, Montes-Bayón M. Evaluation of copper uptake in individual spores of Streptomyces coelicolor and endogenic nanoparticles formation to modulate the secondary metabolism. Metallomics 2022; 14:6541869. [PMID: 35238926 DOI: 10.1093/mtomcs/mfac015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 02/17/2022] [Indexed: 11/14/2022]
Abstract
Copper modulates secondary metabolism in Streptomyces. Although the cytosolic copper concentration is controlled by several chaperones and transporters, the formation of copper nanoparticles and its relation to the antibiotic production has never been established in the model Streptomyces coelicolor. In this work, state-of-the-art analytical tools are used to evaluate the incorporation of copper in individual spores of Streptomyces coelicolor at different exposure concentrations (40, 80 and 160 µM Cu). Among them, the use of single cell-inductively coupled plasma-mass spectrometry (SC-ICP-MS) revealed incorporation levels in the range of 2 to 2.5 fg/spore (median) increasing up to 4.75 fg/spore at the upper exposure concentrations. The copper storage within the spores in the form of nanoparticles was evaluated using a combination of single particle-ICP-MS (sp-ICP-MS) and transmission electron microscopy (TEM). The obtained data confirmed the presence of nanoparticles in the range of 8 to 40 (mean size 21 nm) inside S. coelicolor spores. The presence of the nanoparticles was correlated with the actinorhodin production in liquid non-sporulating cultures amended with up to 80 µM Cu. However, further increase to 160 µM Cu, yielded to a significant decrease in antibiotic production. Secondary metabolism is activated under stressful conditions and cytosolic copper seems to be one of the signals triggering antibiotic production. Particularly, nanoparticle formation might contribute to modulate the secondary metabolism and prevent for copper toxicity. This work describes, for first time, the formation of endogenous copper nanoparticles in S. coelicolor and reveals their correlation with the secondary metabolism.
Collapse
Affiliation(s)
- P García Cancela
- Department of Physical and Analytical Chemistry. Faculty of Chemistry, University of Oviedo. C/ Julián Clavería s/n 33006 Oviedo, Spain and Instituto de Investigación Sanitaria del Principado de Asturias (ISPA)
| | - N González Quiñónez
- Department of Functional Biology. Faculty of Biology, University of Oviedo. C/ Julián Clavería s/n 33006 Oviedo, Spain and Instituto de Investigación Sanitaria del Principado de Asturias (ISPA)
| | - M Corte-Rodríguez
- Department of Physical and Analytical Chemistry. Faculty of Chemistry, University of Oviedo. C/ Julián Clavería s/n 33006 Oviedo, Spain and Instituto de Investigación Sanitaria del Principado de Asturias (ISPA)
| | - J Bettmer
- Department of Physical and Analytical Chemistry. Faculty of Chemistry, University of Oviedo. C/ Julián Clavería s/n 33006 Oviedo, Spain and Instituto de Investigación Sanitaria del Principado de Asturias (ISPA)
| | - A Manteca
- Department of Functional Biology. Faculty of Biology, University of Oviedo. C/ Julián Clavería s/n 33006 Oviedo, Spain and Instituto de Investigación Sanitaria del Principado de Asturias (ISPA)
| | - M Montes-Bayón
- Department of Physical and Analytical Chemistry. Faculty of Chemistry, University of Oviedo. C/ Julián Clavería s/n 33006 Oviedo, Spain and Instituto de Investigación Sanitaria del Principado de Asturias (ISPA)
| |
Collapse
|
8
|
Huang Y, Lum JTS, Leung KSY. An integrated ICP-MS-based analytical approach to fractionate and characterize ionic and nanoparticulate Ce species. Anal Bioanal Chem 2022; 414:3397-3410. [PMID: 35129641 DOI: 10.1007/s00216-022-03958-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 01/26/2022] [Accepted: 02/02/2022] [Indexed: 11/26/2022]
Abstract
Cerium dioxide nanoparticles (CeO2 NPs) are widely used in various fields, leading to concern about their effect on human health. When conducting in vivo investigations of CeO2 NPs, the challenge is to fractionate ionic Ce and CeO2 NPs and to characterize CeO2 NPs without changing their properties/state. To meet this challenge, we developed an integrated inductively coupled plasma-mass spectrometry (ICP-MS)-based analytical approach in which ultrafiltration is used to fractionate ionic and nanoparticulate Ce species while CeO2 NPs are characterized by single particle-ICP-MS (sp-ICP-MS). We used this technique to compare the effects of two sample pretreatment methods, alkaline and enzymatic pretreatments, on ionic Ce and CeO2 NPs. Results showed that enzymatic pretreatment was more efficient in extracting ionic Ce or CeO2 NPs from animal tissues. Moreover, results further showed that the properties/states of all ionic and nanoparticulate Ce species were well preserved. The rates of recovery of both species were over 85%; the size distribution of CeO2 NPs was comparable to that of original NPs. We then applied this analytical approach, including the enzymatic pretreatment and ICP-MS-based analytical techniques, to investigate the bioaccumulation and biotransformation of CeO2 NPs in mice. It was found that the thymus acts as a "holding station" in CeO2 NP translocation in vivo. CeO2 NP biotransformation was reported to be organ-specific. This is the first study to evaluate the impact of enzymatic and alkaline pretreatment on Ce species, namely ionic Ce and CeO2 NPs. This integrated ICP-MS-based analytical approach enables us to conduct in vivo biotransformation investigations of CeO2 NPs.
Collapse
Affiliation(s)
- Yingyan Huang
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region, People's Republic of China
| | - Judy Tsz-Shan Lum
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region, People's Republic of China
| | - Kelvin Sze-Yin Leung
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region, People's Republic of China.
- HKBU Institute of Research and Continuing Education, Shenzhen Virtual University Park, Shenzhen, People's Republic of China.
| |
Collapse
|
9
|
Zeng W, Hu Z, Luo J, Hou X, Jiang X. Highly sensitive determination of trace antimony in water samples by cobalt ion enhanced photochemical vapor generation coupled with atomic fluorescence spectrometry or ICP-MS. Anal Chim Acta 2022; 1191:339361. [PMID: 35033238 DOI: 10.1016/j.aca.2021.339361] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 12/05/2021] [Accepted: 12/06/2021] [Indexed: 11/28/2022]
Abstract
A method for highly sensitive determination of trace antimony was proposed by using cobalt ion enhanced photochemical vapor generation (PCVG) for sample introduction into atomic fluorescence spectrometry (AFS) or inductively coupled plasma-mass spectrometry (ICP-MS) for elemental detection. During the PCVG process, the sample introduction efficiency of Sb could be significantly improved by addition of 5 mg L-1 Co2+ in the mixed acid medium of 10% (v/v) formic acid and 20% (v/v) acetic acid, with a final 12-fold and 133-fold enhancement of AFS and ICP-MS intensity, respectively. The experimental conditions including enhancement ions, acid medium, UV irradiation, working gas as well as potential interference were investigated in detail. Under the optimal experimental conditions, the limit of detection (LOD) for Sb was 0.05 and 0.001 μg L-1 by using AFS and ICP-MS determination, respectively. The method was successfully used for analysis of real water samples, with satisfactory recoveries of 92-94%.
Collapse
Affiliation(s)
- Wen Zeng
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, 610064, China
| | - Zenghui Hu
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan, 610064, China
| | - Jin Luo
- Analytical & Service Center of Sichuan Province, Chengdu, Sichuan, 610023, China
| | - Xiandeng Hou
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, 610064, China
| | - Xiaoming Jiang
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, 610064, China.
| |
Collapse
|
10
|
Faiz F, Qiao JQ, Lian HZ, Mao L, Cui XB. A combination approach using two functionalized magnetic nanoparticles for speciation analysis of inorganic arsenic. Talanta 2022; 237:122939. [PMID: 34736670 DOI: 10.1016/j.talanta.2021.122939] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 10/05/2021] [Accepted: 10/06/2021] [Indexed: 10/20/2022]
Abstract
Mercapto- and amino-functionalized magnetic nanoparticles, Fe3O4@SiO2@MPTMS (SMNPs-MPTMS) and Fe3O4@SiO2@APTES (SMNPs-APTES), have been applied as magnetic solid-phase extraction (MSPE) sorbents to directly extract arsenite (As(III)) and arsenate (As(V)) respectively, followed by inductively coupled plasma-mass spectrometry (ICP-MS) detection. Various MSPE parameters were optimized including dose of magnetic adsorbent, pH of sample solution, loading and elution conditions of analytes, adsorption capacity and reusability of SMNPs-MPTMS and SMNPs-APTES for As(III) and As(V) respectively. Under the optimized MSPE conditions, this combined scheme possesses excellent selectivity and strong anti-interference ability without any oxidation or reduction prior to capture of these two species. It is found that with a 25-fold enrichment factor, the limits of detection of As(III) and As(V) were 23.5 and 10.5 ng L-1, respectively. To verify the reliability of the proposed protocol, a certified reference material of environmental water was analyzed, and the results for inorganic arsenic species were in close agreement with the certified values. The applicability of the combination strategy for speciation analysis of inorganic arsenic was evaluated in spiked tap, river, lake and rain water samples. Good recoveries of 89%-96% and 90%-102% were achieved for As(III) and As(V), respectively, with the relative standard deviation ranges of 3.2%-8.0% and 2.5%-7.6%. Through the characterization of functionalized magnetic nanoparticles and the optimization of MSPE experiment, it is confirmed that the existence of mercapto and amino groups on SMNPs-MPTMS and SMNPs-APTES sorbents are responsible for the extraction of As(III) and As(V), respectively, via coordination and electrostatic interactions.
Collapse
Affiliation(s)
- Faisal Faiz
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, 210023, China
| | - Jun-Qin Qiao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, 210023, China
| | - Hong-Zhen Lian
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, 210023, China.
| | - Li Mao
- Ministry of Education (MOE) Key Laboratory of Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
| | - Xiao-Bing Cui
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| |
Collapse
|
11
|
Macke M, Quarles CD, Sperling M, Karst U. Fast and automated monitoring of gadolinium-based contrast agents in surface waters. Water Res 2021; 207:117836. [PMID: 34798450 DOI: 10.1016/j.watres.2021.117836] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 10/23/2021] [Accepted: 11/01/2021] [Indexed: 06/13/2023]
Abstract
Gadolinium-based contrast agents (GBCAs) are frequently used for magnetic resonance imaging to improve image contrast. These inert complexes are excreted unmetabolized from the human body and pass through wastewater treatment plants almost unaffected, leading to a significant release of anthropogenic Gd into the environment. However, long-term ecotoxicological effects of GBCAs are mainly unknown and thus powerful methods of speciation analysis are required to monitor their distribution and fate in aquatic systems. In this work, a rapid and efficient monitoring method was developed utilizing a fully automated single platform system for total metal analysis and syringe-driven chromatography in combination with inductively coupled plasma-mass spectrometry (ICP-MS). An anion-exchange chromatography (IC) method was developed and applied to achieve a rapid separation and sensitive detection of the five complexes Gd-HP-DO3A, Gd-BT-DO3A, Gd-DOTA, Gd-DTPA, and Gd-BOPTA that are commonly administered in the European Union. Furthermore, the use of an automated inline-dilution function allowed a fast-external calibration from single stock standards. A chromatographic run time of less than 2 min and species-specific detection limits between 11 and 19 pmol L-1 on a quadrupole ICP-MS proved to be competitive compared to previously published methods, but without the use of aerosol desolvation and/or sector field ICP-MS to enhance sensitivity. The automated IC-ICP-MS method was applied for quantitative GBCA monitoring in a multitude of surface water samples that were obtained in the German state of North Rhine-Westphalia. The complexes Gd-HP-DO3A, Gd-BT-DO3A, and Gd-DOTA, were detected and quantified. In addition, the occurrence of an unidentified Gd species was observed for one of the sampled river systems.
Collapse
Affiliation(s)
- Marcel Macke
- Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstr. 28/30, 48149 Münster, Germany
| | - C Derrick Quarles
- Elemental Scientific, Inc., 7277 World Communications Dr., Omaha, NE 68022, United States
| | - Michael Sperling
- Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstr. 28/30, 48149 Münster, Germany; European Virtual Institute for Speciation Analysis (EVISA), Germany
| | - Uwe Karst
- Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstr. 28/30, 48149 Münster, Germany.
| |
Collapse
|
12
|
Men X, Wu C, Zhang X, Wei X, Chen ML, Yang T, Wang JH. Intracellular silver speciation by coupling capillary electrophoresis to ICP-MS integrating a high performance spiral flow spray chamber. Anal Chim Acta 2021; 1166:338540. [PMID: 34023001 DOI: 10.1016/j.aca.2021.338540] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 04/10/2021] [Accepted: 04/15/2021] [Indexed: 10/21/2022]
Abstract
The study of silver species and their distribution/transformation in cell interior is of high significance for the elucidation of toxicology of silver nanoparticles (AgNPs). The intracellular speciation of dissolved Ag(I) and AgNPs was reported. The analytical platform integrated capillary electrophoresis (CE) to inductively coupled plasma-mass spectrometry (ICP-MS) incorporating a high efficiency interface and a high performance spiral flow spray chamber (SFSC). The interface and the SFSC provide a favorable detection limit of 87 ng L-1 for the dissolved Ag(I). Total silver content was quantified by ICP-MS subject to digestion of the cell lysate, and quantification of AgNPs was carried out by subtraction. The speciation of dissolved Ag(I) and AgNPs in culture medium and HepG2 cells was performed, with RSDs of <3% for relative peak area and <2% for migration time, as well as spiking recoveries of 93.8%-94.3% in opti-MEM and 92.7%-106.6% in cell lysate. The present study indicated higher solubility of AgNPs in the cell interior with respect to that in the culture medium, due to oxidative stress or acidic microenvironment in the cancer cells.
Collapse
Affiliation(s)
- Xue Men
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, China
| | - Chengxin Wu
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, China
| | - Xuan Zhang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, China
| | - Xing Wei
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, China
| | - Ming-Li Chen
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, China.
| | - Ting Yang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, China
| | - Jian-Hua Wang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, China.
| |
Collapse
|
13
|
Sun YL, Zhao LY, Lian HZ, Mao L, Cui XB. Carboxyl-functionalized hybrid monolithic column prepared by "thiol-ene" click reaction for noninvasive speciation analysis of chromium with inductively coupled plasma-mass spectrometry. Anal Chim Acta 2020; 1137:85-93. [PMID: 33153612 DOI: 10.1016/j.aca.2020.08.052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 08/16/2020] [Accepted: 08/24/2020] [Indexed: 11/30/2022]
Abstract
A novel carboxyl-functionalized hybrid monolithic column was developed based on "thiol-ene" click reaction via "one-pot" by choosing mercaptosuccinic acid, γ-methyl methacrylate trimethoxysilane and tetramethoxysilane as reaction monomers. The design of the hybrid monolithic column was assisted by the comparison in computational simulation with existing carboxyl-functionalized materials. The characterization by scanning electron microscopy, energy dispersive X-ray spectroscopy, N2 adsorption-desorption measurement, Fourier-transform infrared spectroscopy and elemental analysis showed that the carboxyl-functionalized material has the advantages of good permeability and high mechanical strength. Then, we used the prepared carboxyl-hybrid monolith column as solid phase microextraction adsorbent for separation of trace inorganic chromium species. Under pH 4.5, the hybrid monolith column can selectively enrich Cr(III) without adsorbing Cr(VI) and afterwards, Cr(III) can be eluted by 1.0 mol L-1 HCl. The chromium speciation separation method based on carboxyl-hybrid monolith column followed by inductively coupled plasma-mass spectrometry possessed the merits of facile preparation, low cost, simple and mild extraction condition, and sensitive detection, which has been successfully applied to the separation, enrichment and detection of inorganic chromium in environmental waters.
Collapse
Affiliation(s)
- Yue-Lun Sun
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, 210023, China
| | - Ling-Yu Zhao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, 210023, China
| | - Hong-Zhen Lian
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, 210023, China.
| | - Li Mao
- Ministry of Education (MOE) Key Laboratory of Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
| | - Xiao-Bing Cui
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| |
Collapse
|
14
|
Song OY, Islam MA, Son JH, Jeong JY, Kim HE, Yeon LS, Khan N, Jamila N, Kim KS. Elemental composition of pork meat from conventional and animal welfare farms by inductively coupled plasma-optical emission spectrometry (ICP-OES) and ICP-mass spectrometry (ICP-MS) and their authentication via multivariate chemometric analysis. Meat Sci 2020; 172:108344. [PMID: 33096429 DOI: 10.1016/j.meatsci.2020.108344] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 10/04/2020] [Accepted: 10/12/2020] [Indexed: 02/01/2023]
Abstract
The demand of consumers from around the world for natural, nutritional and palatable pork meat is increasing with time. This study analyzed macro (Ca, K, Mg, Na, P), micro (Fe, Zn, Cr, Mn, Ni, Cu, Se, Sr, Cs), trace (Li, Be, V, Co, Ga, Ba, U), and toxic trace (As, Cd, TI, and Pb) elements of pork meat from conventional and animal welfare farms in South Korea. Among the elements analyzed by inductively coupled plasma-optical emission, and mass spectrometric (ICP-OES, ICP-MS) techniques, K, Fe, Mn, and Ni content were higher in animal welfare pork meat. The trace and toxic trace elements content were lower than the standard values. The principal component and linear discriminant analyses (PCA, LDA) explained the highest variance (99.82%, 99.00%) of the group based on toxic elements. These findings can thus be used to evaluate animal welfare and conventional farms pork meat quality in South Korea as well as worldwide.
Collapse
Affiliation(s)
- Ok Yeon Song
- Department of Food and Nutrition, Chosun University, Gwangju 61452, Republic of Korea
| | - Md Atikul Islam
- Department of Food and Nutrition, Chosun University, Gwangju 61452, Republic of Korea; Department of Chemistry, Hajee Mohammad Danesh Science and Technology University, Dinajpur 5200, Bangladesh
| | - Ji Hyeon Son
- Department of Food and Nutrition, Chosun University, Gwangju 61452, Republic of Korea
| | - Ji Young Jeong
- Department of Food and Nutrition, Chosun University, Gwangju 61452, Republic of Korea
| | - Hui Eun Kim
- Department of Food and Nutrition, Chosun University, Gwangju 61452, Republic of Korea
| | - Lee Seung Yeon
- Department of Food and Nutrition, Chosun University, Gwangju 61452, Republic of Korea
| | - Naeem Khan
- Department of Chemistry, Kohat University of Science & Technology, Kohat 26000, Khyber Pakhtunkhwa, Pakistan
| | - Nargis Jamila
- Department of Chemistry, Shaheed Benazir Bhutto Women University, Peshawar 25000, Khyber Pakhtunkhwa, Pakistan
| | - Kyong Su Kim
- Department of Food and Nutrition, Chosun University, Gwangju 61452, Republic of Korea.
| |
Collapse
|
15
|
Kisomi AS, Alizadeh T, Shakeri A. μ-Thin-layer chromatography coupled with laser ablation- inductively coupled plasma-mass spectrometry using tin(II)-imprinted polymer nanoparticles as a stationary phase for speciation of tin. Mikrochim Acta 2020; 187:298. [PMID: 32347371 DOI: 10.1007/s00604-020-04260-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Accepted: 04/03/2020] [Indexed: 12/29/2022]
Abstract
A unique and novel μ-thin-layer chromatography method based on Sn(II) ion-imprinted polymer (Sn-IIP) for speciation of tin ion species in water and plasma samples is introduced for the first time. For this purpose, N-allylthiourea (NATU) and ethylene glycol dimethacrylate (EGDMA) were copolymerized in the presence of Sn(II). The obtained polymer particles were identified using multiple techniques like BET, FT-IR, XRD, and FESEM. The effects of different variables such as pH of the solution, mobile phase composition, and IIP per CaSO4 mass ratio on the separation efficiency were also evaluated. After completion of the separation process on the plate, its surface was scanned by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Under the established optimal condition, the detection limit, relative standard deviation (RSD) of responses, and linear dynamic range (LDR) of the method were obtained as 0.3 μg L-1, 3.5%, and 0.8-900 μg L-1 for Sn(II) and 0.4 μg L-1, 4%, and 1-740 μg L-1 for Sn(IV) assay, respectively. The developed method was finally applied to the speciation of tin in various water and plasma samples. Graphical abstract Schematic representation of μ-thin-layer chromatography method based on tin(II) ion-imprinted polymer (Sn-IIP) for speciation of tin ion species in water and plasma samples and scanned separated casts by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS).
Collapse
Affiliation(s)
| | - Taher Alizadeh
- Department of Analytical Chemistry, Faculty of Chemistry, University College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran.
| | - Alireza Shakeri
- School of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6619, Tehran, Iran
| |
Collapse
|
16
|
Galbács G, Kéri A, Kálomista I, Kovács-Széles É, Gornushkin IB. Deuterium analysis by inductively coupled plasma mass spectrometry using polyatomic species: An experimental study supported by plasma chemistry modeling. Anal Chim Acta 2020; 1104:28-37. [PMID: 32106954 DOI: 10.1016/j.aca.2020.01.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 11/20/2019] [Accepted: 01/05/2020] [Indexed: 11/25/2022]
Abstract
A new analytical method is proposed for the determination of deuterium (D) by ICP-MS. The method is based on the use of the signal from hydrogen-containing polyatomic ions formed in the inductively coupled plasma. Prior to analytical experiments, a theoretical study was performed to assess the concentration of polyatomic species present in an equilibrium Ar-O-D-H plasma, as a function of temperature and stoichiometric composition. It was established that the highest sensitivity and linearity measurement of D concentration in a wide range can be achieved by monitoring the ions of D2 and ArD, at masses 4 and 42, respectively. Results of the calculations are in good agreement with the experiments. Signal stability, spectral interferences, as well as the effect of plasma parameters were also assessed. Under optimized conditions, the limit of detection (LOD) was found to be 3 ppm atom fraction for deuterium when measured as ArD (in calcium and potassium free water), or 78 ppm when measured as D2. The achieved LOD values and the 4 to 5 orders of magnitude dynamic range easily allow the measurement of deuterium concentrations at around or above the natural level, up to nearly 100% (or 1 Mio ppm) in a standard quadrupole ICP-MS instrument. An even better performance is expected from the method in high resolution ICP-MS instruments equipped with low dead volume sample introduction systems.
Collapse
Affiliation(s)
- Gábor Galbács
- Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm Square 7, 6720, Szeged, Hungary.
| | - Albert Kéri
- Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm Square 7, 6720, Szeged, Hungary
| | - Ildikó Kálomista
- Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm Square 7, 6720, Szeged, Hungary
| | - Éva Kovács-Széles
- Nuclear Security Department, MTA Centre for Energy Research, Konkoly Thege Miklós Street 29-33, 1121, Budapest, Hungary
| | - Igor B Gornushkin
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse 11, 12489, Berlin, Germany
| |
Collapse
|
17
|
McAllum EJ, Hare DJ, Volitakis I, McLean CA, Bush AI, Finkelstein DI, Roberts BR. Regional iron distribution and soluble ferroprotein profiles in the healthy human brain. Prog Neurobiol 2020; 186:101744. [PMID: 31870805 DOI: 10.1016/j.pneurobio.2019.101744] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 12/11/2019] [Accepted: 12/18/2019] [Indexed: 12/25/2022]
Abstract
Iron is essential for brain development and health where its redox properties are used for a number of neurological processes. However, iron is also a major driver of oxidative stress if not properly controlled. Brain iron distribution is highly compartmentalised and regulated by a number of proteins and small biomolecules. Here, we examine heterogeneity in regional iron levels in 10 anatomical structures from seven post-mortem human brains with no apparent neuropathology. Putamen contained the highest levels, and most case-to-case variability, of iron compared with the other regions examined. Partitioning of iron between cytosolic and membrane-bound iron was generally consistent in each region, with a slightly higher proportion (55 %) in the 'insoluble' phase. We expand on this using the Allen Human Brain Atlas to examine patterns between iron levels and transcriptomic expression of iron regulatory proteins and using quantitative size exclusion chromatography-inductively coupled plasma-mass spectrometry to assess regional differences in the molecular masses to which cytosolic iron predominantly binds. Approximately 60 % was associated with ferritin, equating to approximately 25 % of total tissue iron essentially in storage. This study is the first of its kind in human brain tissue, providing a valuable resource and new insight for iron biologists and neuroscientists, alike.
Collapse
|
18
|
Barneo-Caragol C, Martínez-Morillo E, Rodríguez-González S, Lequerica-Fernández P, Vega-Naredo I, Álvarez FV. Increased serum strontium levels and altered oxidative stress status in early-onset preeclampsia. Free Radic Biol Med 2019; 138:1-9. [PMID: 31055131 DOI: 10.1016/j.freeradbiomed.2019.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 04/29/2019] [Accepted: 05/01/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Correctly distinguishing preeclampsia (PE), gestational hypertension (GH), and intrauterine growth retardation (IUGR) is a challenge for clinicians due to existing similarities. In our previous study, we showed that serum strontium (Sr) levels were elevated in preeclamptic women compared to healthy and GH pregnant women at the end of pregnancy. The main aim of this study was to evaluate Sr and oxidative stress in PE at the time of symptoms onset and before and compare it with IUGR/GH. METHODS Samples collected at symptoms onset included 77 preeclamptic women and 72 women diagnosed with IUGR/GH divided into two groups according to the gestational extraction week (<34 and ≥ 34). Fifteen patients were also serialized until delivery. Samples collected before symptoms onset included 140 women who developed early-onset PE (E-PE, n = 9), late-onset PE (L-PE, n = 13), IUGR (n = 9), GH (n = 32) and no pathologies (n = 77). Strontium, placental growth factor (PlGF), soluble fms-like tyrosine kinase 1 (sFlt-1), uric acid (UA), creatinine, lipid peroxidation, and total antioxidant activity (TAA) were measured. RESULTS Mean Sr, sFlt-1/PIGF ratio, UA, and lipid peroxidation/TAA ratio levels were significantly higher (p = 0.002, <0.0001, <0.0001 and = 0.03, respectively) and estimated glomerular filtration rate (eGFR) and TAA significantly lower (p = 0.0008 and < 0.0001, respectively) in E-PE vs other pathologies when gestational extraction week was <34. There was a significant correlation between Sr and eGFR (r = 0.43, p = 0.02), sFlt-1/PIGF ratio (r = 0.56, p = 0.002), TAA and gestational week of sampling (r = -0.45, p = 0.02) and UA (r = -0.82, p < 0.0001) in the E-PE serial samples. No differences were found in Sr levels before symptoms onset. CONCLUSION Serum Sr concentration and oxidative status are increased in E-PE when compared to other pathologies at the time of symptoms onset. More studies are needed to elucidate the causes of Sr levels elevation and its role in the pathophysiology of PE.
Collapse
Affiliation(s)
- Clara Barneo-Caragol
- Laboratory of Medicine, Department of Clinical Biochemistry, Hospital Universitario Central de Asturias, Av. de Roma, S/n, 33011, Oviedo, Asturias, Spain.
| | - Eduardo Martínez-Morillo
- Laboratory of Medicine, Department of Clinical Biochemistry, Hospital Universitario Central de Asturias, Av. de Roma, S/n, 33011, Oviedo, Asturias, Spain.
| | - Susana Rodríguez-González
- Department of Morphology and Cell Biology, Faculty of Medicine, University of Oviedo, Av. Julián Clavería, S/n, 33006, Oviedo, Asturias, Spain.
| | - Paloma Lequerica-Fernández
- Laboratory of Medicine, Department of Clinical Biochemistry, Hospital Universitario Central de Asturias, Av. de Roma, S/n, 33011, Oviedo, Asturias, Spain.
| | - Ignacio Vega-Naredo
- Department of Morphology and Cell Biology, Faculty of Medicine, University of Oviedo, Av. Julián Clavería, S/n, 33006, Oviedo, Asturias, Spain.
| | - Francisco V Álvarez
- Laboratory of Medicine, Department of Clinical Biochemistry, Hospital Universitario Central de Asturias, Av. de Roma, S/n, 33011, Oviedo, Asturias, Spain; Department of Biochemistry and Molecular Biology, University of Oviedo, C/ Fernando Bongera S/n, 33006, Oviedo, Asturias, Spain.
| |
Collapse
|
19
|
González F, Camacho M, Tiburón NP, Peña MZ, Rueda LR, Luzardo OP. Suitability of anodic stripping voltammetry for routine analysis of venous blood from raptors. Environ Toxicol Chem 2019; 38:737-747. [PMID: 30556155 DOI: 10.1002/etc.4339] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Revised: 09/25/2018] [Accepted: 12/08/2018] [Indexed: 06/09/2023]
Abstract
Lead (Pb) poisoning is a significant threat faced by raptors. Hence, rapid Pb diagnosis has become a priority during the admission of raptors in wildlife recovery centers, and bench-top analyzers, such as LeadCare II ®, are routinely employed for this purpose. However, this device has been designed for conducting analyses of human blood Pb levels (BLLs), and the validity of this methodology for whole blood from raptors has, to date, rarely been assessed. In addition, a recent recall by the US Food and Drug Administration has recommended discontinuing the use of this analyzer for human venous blood because it may underestimate the BLL. We evaluated the precision of BLL measurements taken with LeadCare II by comparing them with those obtained with inductively coupled plasma mass spectrometry (ICP-MS). Our sample contained venous blood from 105 raptors belonging to 4 species. The results showed a good correlation between the 2 techniques (Spearman's r = 0.927, p < 0.0001). The mean BLL with ICP-MS was 19.6 μg/dL; it was found to be 18.7 μg/dL with LeadCare II. A Bland-Altman analysis indicated that the bias between the mean differences was only 0.5 μg/dL, but it had a high standard deviation of bias (5.7 μg/dL) and 95% limits of agreement from -10.75 to 11.74 μg/dL. The present results indicated that LeadCare II has an overall sensitivity of 71.8% and a positive predictive value of 76.3%. The specificity of LeadCare II for detecting animals with low BLL (<3.4 μg/dL) was 96.4%, and the negative predictive value (the probability that a value below the limit of detection of LeadCare II has a true correspondence with the actual value) was 100%. The present results indicated that, although LeadCare II might be imperfect in the estimation of BLLs in raptors, it performs reasonably well and might be employed in the clinical setting to assess patients potentially suffering from Pb poisoning. Environ Toxicol Chem 2019;38:737-747. © 2018 SETAC.
Collapse
Affiliation(s)
- Fernando González
- Grupo de Rehabilitación de la Fauna Autóctona y su Hábitat (GREFA), Majadahonda, Madrid, Spain
- Study Group on Wild Animal Conservation Medicine (GEMAS), Spain
| | - María Camacho
- Study Group on Wild Animal Conservation Medicine (GEMAS), Spain
| | - Natalia Pastor Tiburón
- Grupo de Rehabilitación de la Fauna Autóctona y su Hábitat (GREFA), Majadahonda, Madrid, Spain
- Study Group on Wild Animal Conservation Medicine (GEMAS), Spain
| | - Manuel Zumbado Peña
- Toxicology Unit, Research Institute of Biomedical and Health Sciences (IUIBS), Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
| | - Luis Revuelta Rueda
- Study Group on Wild Animal Conservation Medicine (GEMAS), Spain
- Veterinary Faculty, University Complutense of Madrid, Madrid, Spain
| | - Octavio P Luzardo
- Study Group on Wild Animal Conservation Medicine (GEMAS), Spain
- Toxicology Unit, Research Institute of Biomedical and Health Sciences (IUIBS), Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
- Spanish Biomedical Research Center in Physiopathology of Obesity and Nutrition (CIBERObn), Madrid, Spain
| |
Collapse
|
20
|
Holtkamp HU, Morrow SJ, Kubanik M, Hartinger CG. Hyphenation of capillary electrophoresis to inductively coupled plasma mass spectrometry with a modified coaxial sheath-flow interface. J Chromatogr A 2018; 1561:76-82. [PMID: 29798804 DOI: 10.1016/j.chroma.2018.05.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 05/14/2018] [Accepted: 05/15/2018] [Indexed: 12/23/2022]
Abstract
Capillary electrophoretic analyses benefit significantly from hyphenation to mass spectrometric techniques. While the coupling to ESI-MS is routinely performed, for example by using a coaxial sheath-flow interface, hyphenating it to inductively coupled plasma mass spectrometry is more technically challenging. We use a commercially available coaxial sheath-flow interface (CSFI) and a simple PTFE-based end-cap for easy, inexpensive CE-ICP-MS hyphenation with improved sensitivity and analytical performance compared to commercially available interfaces. We have optimized key nebulizer parameters such as capillary position, sheath liquid flow rate, and carrier gas flow rate, and compared the CSFI with a commercially available interface. In a set of proof-of-principle experiments employing the anticancer agent cisplatin it was demonstrated that the signal to noise response and sensitivity were considerably improved leading to detection limits for 195Pt of 0.08 μM.
Collapse
Affiliation(s)
- Hannah U Holtkamp
- University of Auckland, School of Chemical Sciences, Private Bag 92019, Auckland 1142, New Zealand(1)
| | - Stuart J Morrow
- University of Auckland, School of Chemical Sciences, Private Bag 92019, Auckland 1142, New Zealand(1)
| | - Mario Kubanik
- University of Auckland, School of Chemical Sciences, Private Bag 92019, Auckland 1142, New Zealand(1)
| | - Christian G Hartinger
- University of Auckland, School of Chemical Sciences, Private Bag 92019, Auckland 1142, New Zealand(1).
| |
Collapse
|
21
|
Barneo-Caragol C, Martínez-Morillo E, Rodríguez-González S, Lequerica-Fernández P, Vega-Naredo I, Álvarez Menéndez FV. Strontium and its role in preeclampsia. J Trace Elem Med Biol 2018; 47:37-44. [PMID: 29544806 DOI: 10.1016/j.jtemb.2018.01.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Revised: 01/08/2018] [Accepted: 01/12/2018] [Indexed: 01/15/2023]
Abstract
BACKGROUND Preeclampsia (PE) is considered a specific vascular disease in which endothelial dysfunction may be the crucial factor of its pathogenesis. It has been suggested that strontium (Sr) may play a role in the pathophysiology of PE. Our group established in a previous study the serum levels of Sr in healthy pregnancies, and the main aim of the present study was to evaluate Sr concentrations and oxidative status in preeclamptic women. METHODS The study population included women with early-onset PE (E-PE, n = 39), late-onset PE (L-PE, n = 67) and serial samples from a subset of preeclamptic women (PE-ss, n = 20). The control group included women with gestational hypertension (GH, n = 56) and healthy pregnancies (samples collected in the 1st (n = 50), 2nd (n = 51) and 3rd trimesters (n = 53)). Strontium, calcium (Ca), uric acid (UA), placental growth factor (PlGF), soluble fms-like tyrosine kinase 1 (sFlt-1), N-terminal pro-brain natriuretic peptide (NT-proBNP), lipid peroxidation and total antioxidant activity (TAA) were measured in these samples. RESULTS Mean Sr levels were significantly higher in PE than in control groups (p ≤ 0.0001). Calcium values were found to be significantly lower in E-PE compared to control groups (p = 0.03). Higher levels of NT-proBNP were found in PE vs. control groups (p < 0.001). sFlt-1/PlGF ratio was higher in E-PE compared to L-PE and GH (p < 0.001). Uric acid levels in PE were significantly higher than in control groups (p < 0.0001). There was a strong positive correlation between UA and Sr in the E-PE serial samples (r = 0.80, p < 0.0001). Lipid peroxidation and lipid peroxidation/TAA ratios were found to be higher in PE, with lower values of TAA. CONCLUSION The higher levels of Sr and the alterations of redox status found in preeclamptic women, along with the strong correlation between UA and Sr suggest that this element may be involved in the pathogenesis of PE.
Collapse
Affiliation(s)
- Clara Barneo-Caragol
- Laboratory of Medicine, Department of Clinical Biochemistry, Hospital Universitario Central de Asturias, Av. de Roma, s/n, 33011, Oviedo, Asturias, Spain.
| | - Eduardo Martínez-Morillo
- Laboratory of Medicine, Department of Clinical Biochemistry, Hospital Universitario Central de Asturias, Av. de Roma, s/n, 33011, Oviedo, Asturias, Spain.
| | - Susana Rodríguez-González
- Department of Morphology and Cell Biology, Faculty of Medicine, University of Oviedo, Av. Julián Clavería, s/n, 33006, Oviedo, Asturias, Spain.
| | - Paloma Lequerica-Fernández
- Laboratory of Medicine, Department of Clinical Biochemistry, Hospital Universitario Central de Asturias, Av. de Roma, s/n, 33011, Oviedo, Asturias, Spain.
| | - Ignacio Vega-Naredo
- Department of Morphology and Cell Biology, Faculty of Medicine, University of Oviedo, Av. Julián Clavería, s/n, 33006, Oviedo, Asturias, Spain.
| | - Francisco V Álvarez Menéndez
- Laboratory of Medicine, Department of Clinical Biochemistry, Hospital Universitario Central de Asturias, Av. de Roma, s/n, 33011, Oviedo, Asturias, Spain; Department of Biochemistry and Molecular Biology, University of Oviedo, C/ Fernando Bongera s/n, 33006, Oviedo, Asturias, Spain.
| |
Collapse
|
22
|
Barneo-Caragol C, Martínez-Morillo E, Rodríguez-González S, Lequerica-Fernández P, Vega-Naredo I, Álvarez Menéndez FV. Strontium and oxidative stress in normal pregnancy. J Trace Elem Med Biol 2018; 45:57-63. [PMID: 29173484 DOI: 10.1016/j.jtemb.2017.09.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 09/16/2017] [Accepted: 09/22/2017] [Indexed: 01/10/2023]
Abstract
BACKGROUND Pregnancy brings about metabolic and oxidative changes that involve various trace elements and oxidative stress. Strontium (Sr) is a trace element scarcely studied in this context, although it has been suggested that it may play a role in the pathophysiology of preeclampsia. The main aim of this study was to evaluate Sr concentrations and oxidative status in normal pregnancy. METHODS The study population included non-pregnant women (n=31), healthy pregnant women in the first (n=50), second (n=51) and third (n=53) trimesters of gestation, and women in postpartum period (n=31). Additionally, samples from another twenty pregnant women were obtained in the three trimesters. Strontium, copper, selenium and zinc were measured by inductively coupled plasma-mass spectrometry. Calcium (Ca), uric acid (UA), lipid peroxidation and total antioxidant activity (TAA) were measured by spectrophotometric assays. RESULTS Strontium remained unchanged until the third trimester of pregnancy, in which significantly higher levels were found (p=0.001). The other elements showed diverse trends during pregnancy. Uric acid levels were significantly different in all groups (p<0.001), increasing gradually as the pregnancy progresses. In serial samples, there was a statistically significant positive correlation between Sr and gestational week of sampling (r=0.31, p=0.01), UA (r=0.40, p=0.001) and lipid peroxidation/TAA ratio (r=0.38, p=0.0002). Additionally, Sr correlated negatively with TAA (r=-0.40, p=0.0001). CONCLUSION Strontium seems to play a physiological role in the oxidative status of the human organism. Further studies involving Sr and pathologies of pregnancy are warranted.
Collapse
Affiliation(s)
- Clara Barneo-Caragol
- Laboratory of Medicine, Department of Clinical Biochemistry, Hospital Universitario Central de Asturias, Av. de Roma, s/n, 33011, Oviedo, Asturias, Spain.
| | - Eduardo Martínez-Morillo
- Laboratory of Medicine, Department of Clinical Biochemistry, Hospital Universitario Central de Asturias, Av. de Roma, s/n, 33011, Oviedo, Asturias, Spain.
| | - Susana Rodríguez-González
- Department of Morphology and Cell Biology, Faculty of Medicine, University of Oviedo, Av. Julián Clavería, s/n, 33006, Oviedo, Asturias, Spain.
| | - Paloma Lequerica-Fernández
- Laboratory of Medicine, Department of Clinical Biochemistry, Hospital Universitario Central de Asturias, Av. de Roma, s/n, 33011, Oviedo, Asturias, Spain.
| | - Ignacio Vega-Naredo
- Department of Morphology and Cell Biology, Faculty of Medicine, University of Oviedo, Av. Julián Clavería, s/n, 33006, Oviedo, Asturias, Spain.
| | - Francisco V Álvarez Menéndez
- Laboratory of Medicine, Department of Clinical Biochemistry, Hospital Universitario Central de Asturias, Av. de Roma, s/n, 33011, Oviedo, Asturias, Spain; Department of Biochemistry and Molecular Biology, University of Oviedo, C/Fernando Bongera s/n, 33006, Oviedo, Asturias, Spain.
| |
Collapse
|
23
|
Kwaansa-Ansah EE, Adimado AA, Nriagu JO, Basu N. Comparison of Three Analytical Methods for the Quantitation of Mercury in Environmental Samples from the Volta Lake, Ghana. Bull Environ Contam Toxicol 2016; 97:677-683. [PMID: 27660189 DOI: 10.1007/s00128-016-1920-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 09/13/2016] [Indexed: 06/06/2023]
Abstract
Three analytical methods using automatic mercury analyzer (AMA), direct mercury analyzer (DMA) and inductively coupled plasma-mass spectrometry (ICP-MS) were applied to determine mercury in fish and sediment samples from the Volta Lake in Ghana with the aim of comparing their accuracy, precision, and limit of quantifications. There was statistically no significant difference (p < 0.05) between the concentrations recorded by the methods. This indicates their suitability for the accurate determination of mercury. Limit of quantification was found to be in the order; ICP-MS (0.053 ng/g) < DMA (0.527 ng/g) < AMA (2.193 ng/g). Though each of the three methods has a suitable ability in determining accurately the concentrations of mercury in fish and sediment, for the determination of very low concentrations of mercury ICP-MS should be preferred considering the order of the detection limit which follows the trend ICP-MS (0.016 ng/g) < DMA (0.158 ng/g) < AMA (0.509 ng/g).
Collapse
Affiliation(s)
| | - Anthony Apeke Adimado
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Jerome Okon Nriagu
- Department of Environmental Health Science, School of Public Health, University of Michigan, Ann Arbor, MI, 48109-2029, USA
| | - Niladri Basu
- Department of Environmental Health Science, School of Public Health, University of Michigan, Ann Arbor, MI, 48109-2029, USA
| |
Collapse
|
24
|
Gui W, Tian C, Sun Q, Li S, Zhang W, Tang J, Zhu G. Simultaneous determination of organotin pesticides by HPLC-ICP-MS and their sorption, desorption, and transformation in freshwater sediments. Water Res 2016; 95:185-194. [PMID: 26994697 DOI: 10.1016/j.watres.2016.02.056] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 02/23/2016] [Accepted: 02/27/2016] [Indexed: 06/05/2023]
Abstract
In order to better assess their environmental risks, the sorption and degradation of triphenyltin hydroxide, azocyclotin and fenbutatin oxide were studied in two sediments under varying laboratory conditions in this study. An analytical method for simultaneous determination of the three organotins in environmental samples was firstly developed using high performance liquid chromatography-inductively coupled plasma-mass spectrometry (HPLC-ICP-MS). The limit of detection and limit of quantification for standards ranged from 0.13 to 1.46 μg/L. Fortification study showed that when spiked at 2-250 μg/kg the mass recoveries were 73.7-119.6%. Sorption isotherm experiments indicated that the organotins could be strongly adsorbed by the sediments, and organotin sorption kinetics obeyed the pseudo second-order kinetic model. The sorption affinity was inversely related to their water solubility. All isotherms fitted with the Henry mode fairly well (r(2) > 0.96) with distribution coefficients (Kd) ranging from 746.1 to 2465.2 mL/g. The three organotins could rapidly move from the upper water layer to the lower sediment layer, and they were all of moderate degradation compounds with the degradation half lives varying from 38.3 to 84.5d in anaerobic and aerobic water-sediment systems. The degradation rate seemed to be positively related to organic matter content of sediment. Result inferred that the three organotins had the low risks to pollute groundwater when applied on dry land and could moderately degrade in water-sediment system. However, more attention should still be paid to these organotins due to the wide application on agricultural field.
Collapse
Affiliation(s)
- Wenjun Gui
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310058, PR China; Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing 48824, USA
| | - Chunxia Tian
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310058, PR China
| | - Qianqian Sun
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310058, PR China
| | - Shuying Li
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310058, PR China
| | - Wei Zhang
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing 48824, USA; Environmental Science and Policy Program, Michigan State University, East Lansing 48824, USA
| | - Jun Tang
- Zhejiang Provincial Center for Disease Prevention and Control, Hangzhou 310009, Zhejiang Province, PR China.
| | - Guonian Zhu
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310058, PR China.
| |
Collapse
|
25
|
Padoan E, Malandrino M, Giacomino A, Grosa MM, Lollobrigida F, Martini S, Abollino O. Spatial distribution and potential sources of trace elements in PM10 monitored in urban and rural sites of Piedmont Region. Chemosphere 2016; 145:495-507. [PMID: 26701684 DOI: 10.1016/j.chemosphere.2015.11.094] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 11/21/2015] [Accepted: 11/23/2015] [Indexed: 05/22/2023]
Abstract
The results on elemental composition of aerosol (PM10) sampled during 2011 in Piedmont region (Italy) are interpreted using meteorological data, Enrichment Factors (EF), chemometric processing by Principal Component Analysis (PCA), Factor Analysis (FA) and Hierarchical Cluster Analysis (HCA). Daily concentrations of about 30 elements were measured using HR-ICP-MS in five monitoring sites. A clear seasonal pattern, with higher concentrations in autumn and winter, was observed, particularly in the urban sites. Levels of As, Cd, Ni and Pb in most of the samples were within the limits imposed by the European legislation. Spatial differences in PM10 and metal concentrations were significant, with rural and urban sites showing different metal patterns, indicating different sources. K and Ca were used, respectively, as marker of biomass burning and industrial marker (cement plant); EFs showed that Ca was enriched just in one area and K was enriched only in the winter period considered and in some stations. Data analysis through PCA, FA and HCA allowed us to identify correlations among the investigated elements and similarities between sampling sites in order to individuate specific emission sources, such as non-exhaust vehicle emission.
Collapse
Affiliation(s)
- Elio Padoan
- Departimento di Scienze Agrarie, Forestali e Alimentari, Università di Torino, Grugliasco I-10095, Italy
| | - Mery Malandrino
- Dipartimento di Chimica, Università di Torino, Torino I-10125, Italy.
| | - Agnese Giacomino
- Dipartimento di Scienza e Tecnologia del Farmaco, Università di Torino, Torino I-10125 Italy
| | - Mauro M Grosa
- Agenzia Regionale per la Protezione dell'Ambiente (ARPA Piemonte), Torino I-10135, Italy
| | - Francesco Lollobrigida
- Agenzia Regionale per la Protezione dell'Ambiente (ARPA Piemonte), Torino I-10135, Italy
| | - Sara Martini
- Agenzia Regionale per la Protezione dell'Ambiente (ARPA Piemonte), Cuneo I-12100, Italy
| | - Ornella Abollino
- Dipartimento di Chimica, Università di Torino, Torino I-10125, Italy
| |
Collapse
|
26
|
Bairi VG, Lim JH, Quevedo IR, Mudalige TK, Linder SW. Portable X-ray fluorescence spectroscopy as a rapid screening technique for analysis of TiO 2 and ZnO in sunscreens. Spectrochim Acta Part B At Spectrosc 2016; 116:21-27. [PMID: 27076699 PMCID: PMC4827927 DOI: 10.1016/j.sab.2015.11.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This investigation reports a rapid and simple screening technique for the quantification of titanium and zinc in commercial sunscreens using portable X-ray fluorescence spectroscopy (pXRF). A highly evolved technique, inductively coupled plasma-mass spectroscopy (ICP-MS) was chosen as a comparative technique to pXRF, and a good correlation (r2 > 0.995) with acceptable variations (≤25%) in results between both techniques was observed. Analytical figures of merit such as detection limit, quantitation limit, and linear range of the method are reported for the pXRF technique. This method has a good linearity (r2 > 0.995) for the analysis of titanium (Ti) in the range of 0.4-14.23 wt%, and zinc (Zn) in the range of 1.0-23.90 wt%. However, most commercial sunscreens contain organic ingredients, and these ingredients are known to cause matrix effects. The development of appropriate matrix matched working standards to obtain the calibration curve was found to be a major challenge for the pXRF measurements. In this study, we have overcome the matrix effect by using metal-free commercial sunscreens as a dispersing media for the preparation of working standards. An easy extension of this unique methodology for preparing working standards in different matrices was also reported. This method is simple, rapid, and cost-effective and, in comparison to conventional techniques (e.g., ICP-MS), did not generate toxic wastes during sample analysis.
Collapse
Affiliation(s)
- Venu Gopal Bairi
- Office of Regulatory Affairs, Arkansas Regional Laboratory, U.S. Food and Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, United States
| | - Jin-Hee Lim
- Office of Regulatory Affairs, Arkansas Regional Laboratory, U.S. Food and Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, United States
| | - Ivan R. Quevedo
- Office of Regulatory Affairs, Arkansas Regional Laboratory, U.S. Food and Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, United States
| | - Thilak K. Mudalige
- Office of Regulatory Affairs, Arkansas Regional Laboratory, U.S. Food and Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, United States
| | - Sean W. Linder
- Office of Regulatory Affairs, Arkansas Regional Laboratory, U.S. Food and Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, United States
| |
Collapse
|
27
|
Nunes MA, Voss M, Corazza G, Flores EM, Dressler VL. External calibration strategy for trace element quantification in botanical samples by LA-ICP-MS using filter paper. Anal Chim Acta 2016; 905:51-7. [PMID: 26755136 DOI: 10.1016/j.aca.2015.11.049] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 11/19/2015] [Accepted: 11/24/2015] [Indexed: 12/23/2022]
Abstract
The use of reference solutions dispersed on filter paper discs is proposed for the first time as an external calibration strategy for matrix matching and determination of As, Cd, Co, Cr, Cu, Mn, Ni, Pb, Sr, V and Zn in plants by laser ablation-inductively coupled plasma mass spectrometry (LA-ICP-MS). The procedure is based on the use of filter paper discs as support for aqueous reference solutions, which are further evaporated, resulting in solid standards with concentrations up to 250 μg g(-1) of each element. The use of filter paper for calibration is proposed as matrix matched standards due to the similarities of this material with botanical samples, regarding to carbon concentration and its distribution through both matrices. These characteristics allowed the use of (13)C as internal standard (IS) during the analysis by LA-ICP-MS. In this way, parameters as analyte signal normalization with (13)C, carrier gas flow rate, laser energy, spot size, and calibration range were monitored. The calibration procedure using solution deposition on filter paper discs resulted in precision improvement when (13)C was used as IS. The method precision was calculated by the analysis of a certified reference material (CRM) of botanical matrix, considering the RSD obtained for 5 line scans and was lower than 20%. Accuracy of LA-ICP-MS determinations were evaluated by analysis of four CRM pellets of botanical composition, as well as by comparison with results obtained by ICP-MS using solution nebulization after microwave assisted digestion. Plant samples of unknown elemental composition were analyzed by the proposed LA method and good agreement were obtained with results of solution analysis. Limits of detection (LOD) established for LA-ICP-MS were obtained by the ablation of 10 lines on the filter paper disc containing 40 μL of 5% HNO3 (v v(-1)) as calibration blank. Values ranged from 0.05 to 0.81 μg g(-1). Overall, the use of filter paper as support for dried aqueous standards showed to be a useful strategy for calibration and plant analysis by LA-ICP-MS.
Collapse
|
28
|
Fischer JL, Lutomski CA, El-Baba TJ, Siriwardena-Mahanama BN, Weidner SM, Falkenhagen J, Allen MJ, Trimpin S. Matrix-Assisted Ionization-Ion Mobility Spectrometry-Mass Spectrometry: Selective Analysis of a Europium-PEG Complex in a Crude Mixture. J Am Soc Mass Spectrom 2015; 26:2086-2095. [PMID: 26453417 DOI: 10.1007/s13361-015-1233-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 07/09/2015] [Accepted: 07/17/2015] [Indexed: 06/05/2023]
Abstract
The analytical utility of a new and simple to use ionization method, matrix-assisted ionization (MAI), coupled with ion mobility spectrometry (IMS) and mass spectrometry (MS) is used to characterize a 2-armed europium(III)-containing poly(ethylene glycol) (Eu-PEG) complex directly from a crude sample. MAI was used with the matrix 1,2-dicyanobenzene, which affords low chemical background relative to matrix-assisted laser desorption/ionization (MALDI) and electrospray ionization (ESI). MAI provides high ion abundance of desired products in comparison to ESI and MALDI. Inductively coupled plasma-MS measurements were used to estimate a maximum of 10% of the crude sample by mass was the 2-arm Eu-PEG complex, supporting evidence of selective ionization of Eu-PEG complexes using the new MAI matrix, 1,2-dicyanobenzene. Multiply charged ions formed in MAI enhance the IMS gas-phase separation, especially relative to the singly charged ions observed with MALDI. Individual components are cleanly separated and readily identified, allowing characterization of the 2-arm Eu-PEG conjugate from a mixture of the 1-arm Eu-PEG complex and unreacted starting materials. Size-exclusion chromatography, liquid chromatography at critical conditions, MALDI-MS, ESI-MS, and ESI-IMS-MS had difficulties with this analysis, or failed. Graphical Abstract ᅟ.
Collapse
Affiliation(s)
- Joshua L Fischer
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
| | - Corinne A Lutomski
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
| | - Tarick J El-Baba
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
| | | | - Steffen M Weidner
- BAM Federal Institute for Materials Research and Testing, D-12489, Berlin, Germany
| | - Jana Falkenhagen
- BAM Federal Institute for Materials Research and Testing, D-12489, Berlin, Germany
| | - Matthew J Allen
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
| | - Sarah Trimpin
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA.
- MSTM, LLC, Newark, DE, 19711, USA.
| |
Collapse
|
29
|
Wollein U, Bauer B, Habernegg R, Schramek N. Potential metal impurities in active pharmaceutical substances and finished medicinal products - A market surveillance study. Eur J Pharm Sci 2015; 77:100-5. [PMID: 26036232 DOI: 10.1016/j.ejps.2015.05.028] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 05/06/2015] [Accepted: 05/29/2015] [Indexed: 11/21/2022]
Abstract
A market surveillance study has been established by using different atomic spectrometric methods for the determination of selected elemental impurities of particular interest, to gain an overview about the quality of presently marketed drug products and their bulk drug substances. The limit tests were carried out with respect to the existing EMA guideline on the specification limits for residuals of metal catalysts or metal reagents. Also attention was given to the future implementation of two new chapters of the United States Pharmacopoeia (USP) stating limit concentrations of elemental impurities. The methods used for determination of metal residues were inductively coupled plasma-mass spectrometry (ICP-MS), inductively coupled plasma-optical emission spectrometry (ICP-OES), and atomic absorption spectrometry technologies (GFAAS, CVAAS, HGAAS). This article presents the development and validation of the methods used for the determination of 21 selected metals in 113 samples from drug products and their active pharmaceutical ingredients.
Collapse
|
30
|
Mekonnen KN, Ambushe AA, Chandravanshi BS, Redi-Abshiro M, McCrindle RI. Occurrence, distribution, and ecological risk assessment of potentially toxic elements in surface sediments of Lake Awassa and Lake Ziway, Ethiopia. J Environ Sci Health A Tox Hazard Subst Environ Eng 2015; 50:90-99. [PMID: 25438135 DOI: 10.1080/10934529.2015.964634] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Microwave-assisted acid digestion and modified aqua regia (HNO3:HCl:HF:H3BO3) leaching techniques were used for the determination of 15 potentially toxic elements (V, Cr, Fe, Mn, Co, Ni, Cu, Zn, As, Se, Ag, Cd, Sn, Hg and Pb) in sediment samples from Lake Awassa and Lake Ziway, Ethiopia. The digests were subsequently analyzed by inductively coupled plasma-mass spectrometry (ICP-MS) and inductively coupled plasma-optical emission spectrometry (ICP-OES). Mercury was directly determined in the solid samples using an elemental mercury analyzer. The precision and accuracy of the digestion procedures were verified using certified reference materials. The experimental results were in good agreement with the certified values (P < 0.05) and the recoveries were quantitative (>90%). The average relative standard deviations were below 10%. There is significant correlation between the two lakes at the 0.01 level (2-tailed). Using the sediment quality guidelines, both lakes are heavily polluted with Zn and some of the sites are heavily polluted with Cu, Ni and Pb. Based on effect range low (ERL) - effect range medium (ERM), in both lakes for Ag were greater than the ERM, indicating that the areas could be toxic to aquatic organisms, while for Cr, Cu, As and Hg the values were less than ERL.
Collapse
Affiliation(s)
- Kebede N Mekonnen
- a Department of Chemistry , Addis Ababa University , Addis Ababa , Ethiopia
| | | | | | | | | |
Collapse
|
31
|
Beltrán M, Sánchez-Astudillo M, Aparicio R, García-González DL. Geographical traceability of virgin olive oils from south-western Spain by their multi-elemental composition. Food Chem 2015; 169:350-7. [PMID: 25236237 DOI: 10.1016/j.foodchem.2014.07.104] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 05/23/2014] [Accepted: 07/22/2014] [Indexed: 11/20/2022]
Abstract
The geographical traceability of virgin olive oil can be controlled by chemical species that are linked to the production area. Trace elements are among these species. The hypothesis is that the transfer of elements from the soil to the oil is subjected to minor variations and therefore this chemical information can be used for geographical traceability. In order to confirm this hypothesis, the trace elements of virgin olive oils from south-western Spain were analysed, and the same elements were determined in the corresponding olive-pomaces and soils. The differences in the concentration were studied according to cultivars and locations. Results show some coincidences in the selection of elements in soils (W, Fe, Na), olive-pomace (W, Fe, Na, Mg, Mn, Ca, Ba, Li) and olive oils (W, Fe, Mg, Mn, Ca, Ba, Li, Bi), which supports their utility in traceability. In the case of olive oils, 93% of the samples were correctly classified in their geographical origins (96% for Beas, 77% for Gibraleón, 91% for Niebla, and 100% for Sanlúcar de Guadiana).
Collapse
|
32
|
Abstract
AIM: To evaluate the bioequivalence of ranitidine and bismuth derived from two compound preparations.
METHODS: The bioavailability was measured in 20 healthy male Chinese volunteers following a single oral dose (equivalent to 200 mg of ranitidine and 220 mg of bismuth) of the test or reference products in the fasting state. Then blood samples were collected for 24 h. Plasma concentrations of ranitidine and bismuth were analyzed by high-performance liquid chromatography and inductively coupled plasma-mass spectrometry (ICP-MS), respectively. The non-compartmental method was used for pharmacokinetic analysis. Log-transformed Cmax, AUC(0-t) and AUC(0-∞) were tested for bioequivalence using ANOVA and Schuirmann two-one sided t-test. Tmax was analyzed by Wilcoxon’s test.
RESULTS: Various pharmacokinetic parameters of ranitidine derived from the two compound preparations, including Cmax, AUC(0-t), AUC(0-∞), Tmax and T1/2, were nearly consistent with previous observations. These parameters derived from test and reference drug were as follows: Cmax (0.67 ± 0.21 vs 0.68 ± 0.22 mg/L), AUC(0-t) (3.1 ± 0.6 vs 3.0 ± 0.7 mg/L per hour), AUC(0-∞) (3.3 ± 0.6 vs 3.2 ± 0.8 mg/L per hour), Tmax (2.3 ± 0.9 vs 2.1 ± 0.9 h) and T1/2 (2.8 ± 0.3 vs 3.1 ± 0.4 h). In addition, double-peak absorption profiles of ranitidine were found in some Chinese volunteers. For bismuth, those parameters derived from test and reference drug were as follows: Cmax (11.80 ± 7.36 vs 11.40 ± 6.55 μg/L), AUC(0-t) (46.65 ± 16.97 vs 47.03 ± 21.49 μg/L per hour), Tmax (0.50 ± 0.20 vs 0.50 ± 0.20 h) and T1/2 (10.2 ± 2.3 vs 13.0 ± 6.9 h). Ninety percent of confidence intervals for the test/reference ratio of Cmax, AUC(0-t) and AUC(0-) derived from both ranitidine and bismuth were found within the bioequivalence acceptable range of 80%-125%. No significant difference was found in Tmax derived from both ranitidine and bismuth.
CONCLUSION: The two compound preparations are bioequivalent and may be prescribed interchangeably.
Collapse
Affiliation(s)
- Quan Zhou
- Department of Clinical Pharmacology, the 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang Province, China.
| | | | | | | | | |
Collapse
|