1
|
Hu J, Li C, Zhen Y, Chen H, He J, Hou X. Current advances of chemical vapor generation in non-tetrahydroborate media for analytical atomic spectrometry. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116677] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
|
2
|
Frois CF, Boschetti W, dos Passos AS, Potes ML, Vale MGR, Silva MM. A comparison between chemical and photochemical vapor generation techniques for mercury determination using univariate and multivariate optimization. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105029] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
3
|
Interference-free, green microanalytical method for total mercury and methylmercury determination in biological and environmental samples using small-sized electrothermal vaporization capacitively coupled plasma microtorch optical emission spectrometry. Talanta 2020; 217:121067. [PMID: 32498880 DOI: 10.1016/j.talanta.2020.121067] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/17/2020] [Accepted: 04/20/2020] [Indexed: 01/04/2023]
Abstract
An analytical method for the quantification of total Hg and CH3Hg+ in biological tissues (fish, mushroom) and water sediment was developed based on small-sized electrothermal vaporization capacitively coupled plasma microtorch optical emission spectrometry using a low-resolution microspectrometer as detector. Sample preparation was carried out according to the procedure recommended by JRC Technical Report of European Commission for the determination of CH3Hg+ in seafood and adapted by us for lower consumption of reagents. Amounts of 0.1 - 0.5 g sample were subjected to extraction in 5 ml of 47% HBr then CH3Hg+ was extracted in 2 × 1 ml toluene and back-extracted in 2 ml aqueous solution of 1% l-cysteine. Total Hg/CH3Hg+ were quantified in 10 μl of acidic extract/l-cysteine solution after electrothermal vaporization and measurement of 253.652 nm Hg signal in the episodic emission spectra. Under the optimal working conditions of system (70 °C sample drying, 1300 °C sample vaporization, 10 W plasma power and 150 ml min-1 Ar flow) the limits of detection were 7.0 μg kg-1 total Hg and 3.5 μg kg-1 CH3Hg+. Comparison of slopes in external calibration and standard addition procedure revealed the lack of non-spectral interferences of multimineral matrix, so that the calibration against Hg2+ standards was adopted. Pooled recovery of total mercury/methylmercury was 101 ± 7%/100 ± 7%, while precision assessed from measurements of real samples was in the range 1.6-9.6%/2.7-12.8%. The proposed method validated according to Eurachem Guide 2014 is selective and complies with demands in European legislation (Decisions 657/2002; 333/2007; 836/2011) and Association of Official Analytical Chemists Guide in terms of performances for food control. The method displays a high degree of greenness by circumventing cold vapor generation, use of small amounts of reagents and full-miniaturized instrumentation resulting in low analytical costs without reducing results quality. Besides, the method is simple and rapid, since it uses external calibration curves prepared from Hg2+standard solutions both for total Hg and CH3Hg+ determination.
Collapse
|
4
|
Rastogi L, Ankam DP, Dash K. Intrinsic peroxidase-like activity of 4-amino hippuric acid reduced/stabilized gold nanoparticles and its application in the selective determination of mercury and iron in ground water. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 228:117805. [PMID: 31787536 DOI: 10.1016/j.saa.2019.117805] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 11/13/2019] [Accepted: 11/14/2019] [Indexed: 06/10/2023]
Abstract
Herein, we report a method for the synthesis of 4-aminohippuric acid (4-AHA) reduced/stabilized gold nanoparticles and their peroxidase mimicking properties for the colorimetric detection of Fe3+ and Hg2+. The synthesis of nanoparticles was evidenced by appearance of bright red color and an absorption peak at 518 nm. Transmission electron microscopic (TEM) characterization revealed the nanoparticles to be spherical with average size of about 5.9 ± 1.7 nm. X-ray diffraction (XRD) analysis established highly crystalline nature of the nanoparticles. The synthesized nanoparticles have shown very good peroxidase mimicking property; exhibiting the catalytic oxidation of the chromogen 3,3',5,5'-tetramethyl benzidine (TMB) to a blue color product, in the presence of hydrogen peroxide. The peroxidase mimicking activity of the nanoparticles was found to be selectivity enhanced in the presence of Fe3+ and Hg2+ while there was no change in the activity in the presence of other concomitant ions. The mechanism studies revealed that the synthesized gold nanoparticles assisted in electron transfer during the catalytic process however the stimulation of peroxidase-like activity in the presence of Fe3+ and Hg2+ is owed to both generation of hydroxyl radical and accelerated electron transfer. The assay was made selective for iron by the addition of cysteine in acetate buffer; whereas the selective detection of mercury was achieved by carrying out the assay in citrate buffer. The linear ranges for the determination of Fe3+ and Hg2+ in deionized water were found to be: 5-50 ppb and 5-200 ppb respectively. The limits of quantification (LOQ) for Fe3+ and Hg2+ were 4.0 and 2.5 ppb respectively. The assay was applied for the determination of Fe3+ and Hg2+ in drinking and ground water samples. The method holds potential for the on-field screening of these metal ions in real environmental samples.
Collapse
Affiliation(s)
- Lori Rastogi
- National Centre for Compositional Characterization of Materials, Bhabha Atomic Research Centre, ECIL-Post, Hyderabad 500 062, Telangana, India
| | - Durga Prasad Ankam
- National Centre for Compositional Characterization of Materials, Bhabha Atomic Research Centre, ECIL-Post, Hyderabad 500 062, Telangana, India
| | - K Dash
- National Centre for Compositional Characterization of Materials, Bhabha Atomic Research Centre, ECIL-Post, Hyderabad 500 062, Telangana, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India.
| |
Collapse
|
5
|
Xu T, Hu J, Chen H. Transition metal ion Co(II)-assisted photochemical vapor generation of thallium for its sensitive determination by inductively coupled plasma mass spectrometry. Microchem J 2019. [DOI: 10.1016/j.microc.2019.103972] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
6
|
Liu R, Wang C, Hu J, Su Y, Lv Y. DNA-templated copper nanoparticles: Versatile platform for label-free bioassays. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.06.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
7
|
Romanovskiy KA, Bolshov MA, Münz AV, Temerdashev ZA, Burylin MY, Sirota KA. A novel photochemical vapor generator for ICP-MS determination of As, Bi, Hg, Sb, Se and Te. Talanta 2018; 187:370-378. [PMID: 29853061 DOI: 10.1016/j.talanta.2018.05.052] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 05/09/2018] [Accepted: 05/13/2018] [Indexed: 10/16/2022]
Abstract
A scheme of determination of As, Bi, Hg, Sb, Se and Te with photochemical generation of their volatile derivatives and inductively coupled plasma mass spectrometry (ICP-MS) detection was developed. The volatile compounds were produced using a novel photochemical reactor with direct contact of a sample with an ultraviolet (UV) lamp. Essential experimental parameters such as the concentrations of the reagents and the flow rates of the carrier gas and the sample were optimized. For each element, individual optimum values of these parameters were obtained. The detection limits in the optimal single element modes for As, Bi, Hg, Sb, Se and Te were 0.5, 13, 0.6, 0.3, 0.4 and 0.7 ng L-1 respectively. Compromise conditions were determined for simultaneous multielement analysis. The increase of the detection limit for each element in the multielement mode was experimentally estimated. The applicability of the proposed scheme was demonstrated by analysis of certified reference samples of water and fish muscle. Acceptable accuracy of determination of As, Se, Sb, Te and Hg in samples of local lake water was proved by spike recovery test. Possible matrix effects were screened using Placket-Berman design and further examined in detail.
Collapse
Affiliation(s)
- Konstantin A Romanovskiy
- Kuban State University, Department of Chemistry and High Technologies, 149 Stavropolskaya St., Krasnodar 350040, Russia.
| | - Mikhail A Bolshov
- Institute of Spectroscopy of the Russian Academy of Sciences (ISAN), 5 Fizicheskaya St., Troitsk, Moscow 108840, Russia; Lomonosov Moscow State University, Chemistry Department, 1-3 Leninskiye Gory, Moscow 119991, Russia
| | - Alexander V Münz
- Kuban State University, Department of Chemistry and High Technologies, 149 Stavropolskaya St., Krasnodar 350040, Russia
| | - Zaual A Temerdashev
- Kuban State University, Department of Chemistry and High Technologies, 149 Stavropolskaya St., Krasnodar 350040, Russia
| | - Mikhail Yu Burylin
- Kuban State University, Department of Chemistry and High Technologies, 149 Stavropolskaya St., Krasnodar 350040, Russia
| | - Karina A Sirota
- Kuban State University, Department of Chemistry and High Technologies, 149 Stavropolskaya St., Krasnodar 350040, Russia
| |
Collapse
|
8
|
Covaci E, Senila M, Ponta M, Darvasi E, Petreus D, Frentiu M, Frentiu T. Methylmercury determination in seafood by photochemical vapor generation capacitively coupled plasma microtorch optical emission spectrometry. Talanta 2017; 170:464-472. [PMID: 28501197 DOI: 10.1016/j.talanta.2017.04.036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 04/12/2017] [Accepted: 04/15/2017] [Indexed: 12/25/2022]
Abstract
A non-chromatographic method based on double liquid-liquid extraction and measurements by UV photochemical vapor generation capacitively coupled plasma microtorch optical emission spectrometry was developed and characterized for methylmercury determination in seafood. Samples were prepared following the procedure recommended in JRC Technical Report of European Commission formerly proposed for the determination of methylmercury in seafood by thermal decomposition atomic absorption spectrometry, namely confinement of Hg species in 47% HBr solution, extraction of CH3Hg+ in toluene and back-extraction in 1% l-cysteine aqueous solution. Mercury cold vapor was generated by flow injection UV photo-reduction from CH3Hg+ in 0.6molL-1 HCOOH, while quantification was performed against external Hg2+ aqueous standards and measuring Hg 253.652nm emission using a low power/Ar consumption plasma microtorch (15W, 100mLmin-1) and a low resolution microspectrometer (Ocean Optics). The figures of merit and analytical capability were assessed by analyzing certified reference materials and test samples of fish fillet and discussed in relation with requirements for Hg determination in seafood in European legislation (Decisions 2007/333/EC and 2002/657/EC) as well as compared to performances achieved in thermal decomposition atomic absorption spectrometry. The limit of detection and quantification of 2µgkg-1 and 6µgkg-1 respectively, precision of 2.7-9.4% and accuracy of 99±8% of the proposed method for the determination of CH3Hg+ fulfill the demands of European legislation for Hg quantification. The limit of detection and quantification were better than those in the used reference method or other non-/chromatographic methods taken for comparison. The analysis of certified reference materials and the Bland and Altman test performed on 12 test samples confirmed trueness of the proposed method and its reliability for the determination of traces of CH3Hg+ with 95% confidence level. The proposed method fulfills several demands of the eco-scale concept, is sensitive, simple and safe related to sample preparation through elimination of classical, harmful reductants and attractive by using economical miniaturized instrumentation incorporating a low power and low Ar consumption plasma.
Collapse
Affiliation(s)
- Eniko Covaci
- Babes-Bolyai University, Faculty of Chemistry and Chemical Engineering, Arany Janos 11, 400028 Cluj-Napoca, Romania
| | - Marin Senila
- National Institute for Research and Development of Optoelectronics Bucharest, Research Institute for Analytical Instrumentation, Donath 67, 400293 Cluj-Napoca, Romania
| | - Michaela Ponta
- Babes-Bolyai University, Faculty of Chemistry and Chemical Engineering, Arany Janos 11, 400028 Cluj-Napoca, Romania
| | - Eugen Darvasi
- Babes-Bolyai University, Faculty of Chemistry and Chemical Engineering, Arany Janos 11, 400028 Cluj-Napoca, Romania
| | - Dorin Petreus
- Technical University of Cluj-Napoca, Faculty of Electronics, Telecommunications and Information Technology, Gh. Baritiu 26-28, 40002 Cluj-Napoca, Romania
| | - Maria Frentiu
- National Institute for Research and Development of Optoelectronics Bucharest, Research Institute for Analytical Instrumentation, Donath 67, 400293 Cluj-Napoca, Romania
| | - Tiberiu Frentiu
- Babes-Bolyai University, Faculty of Chemistry and Chemical Engineering, Arany Janos 11, 400028 Cluj-Napoca, Romania.
| |
Collapse
|
9
|
Gao Y, Li S, He H, Li T, Yu T, Liu R, Ni S, Shi Z. Sensitive determination of osmium in natural waters by inductively coupled plasma mass spectrometry after photochemical vapor generation. Microchem J 2017. [DOI: 10.1016/j.microc.2016.09.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
10
|
Wang Y, Lin L, Liu J, Mao X, Wang J, Qin D. Ferric ion induced enhancement of ultraviolet vapour generation coupled with atomic fluorescence spectrometry for the determination of ultratrace inorganic arsenic in surface water. Analyst 2016; 141:1530-6. [DOI: 10.1039/c5an02489g] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel method of ultraviolet vapour generation (UVG) coupled with atomic fluorescence spectrometry (AFS) was developed for the determination of ultratrace inorganic arsenic (iAs) in surface water.
Collapse
Affiliation(s)
- Yuelong Wang
- Institute of Quality Standard and Testing Technology for Agro-products
- Chinese Academy of Agricultural Sciences
- and Key Laboratory of Agro-food Safety and Quality
- Ministry of Agriculture
- Beijing 100081
| | - Lingling Lin
- Research Center for Analytical Sciences
- Northeastern University
- Shenyang 110819
- China
| | - Jixin Liu
- Institute of Quality Standard and Testing Technology for Agro-products
- Chinese Academy of Agricultural Sciences
- and Key Laboratory of Agro-food Safety and Quality
- Ministry of Agriculture
- Beijing 100081
| | - Xuefei Mao
- Institute of Quality Standard and Testing Technology for Agro-products
- Chinese Academy of Agricultural Sciences
- and Key Laboratory of Agro-food Safety and Quality
- Ministry of Agriculture
- Beijing 100081
| | - Jianhua Wang
- Research Center for Analytical Sciences
- Northeastern University
- Shenyang 110819
- China
| | - Deyuan Qin
- Beijing Titan Instruments Company
- Limited
- Beijing 100015
- China
| |
Collapse
|
11
|
Kalate Bojdi M, Behbahani M, Omidi F, Hesam G. Application of a novel electrochemical sensor based on modified siliceous mesocellular foam for electrochemical detection of ultra-trace amounts of mercury ions. NEW J CHEM 2016. [DOI: 10.1039/c5nj02973b] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
S-MCF particles were functionalized with dithizone groups, and applied as a new class of mesoporous electrode material for preconcentration and electrochemical detection of trace mercury ions in environmental samples.
Collapse
Affiliation(s)
- Majid Kalate Bojdi
- Department of Chemistry
- Faculty of Science
- University of Birjand
- Birjand
- Iran
| | - Mohammad Behbahani
- Department of Chemistry
- Behbahan Khatam Alanbia University of Technology
- Behbahan
- Iran
| | - Fariborz Omidi
- Department of Occupational Health Engineering
- School of Public Health
- Tehran University of Medical Sciences
- Tehran
- Iran
| | - Ghasem Hesam
- Department of Occupational Health Engineering
- School of Public Health
- Shahroud University of Medical Sciences
- Shahroud
- Iran
| |
Collapse
|
12
|
Suvarapu LN, Baek SO. Recent Developments in the Speciation and Determination of Mercury Using Various Analytical Techniques. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2015; 2015:372459. [PMID: 26236539 PMCID: PMC4506829 DOI: 10.1155/2015/372459] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 06/15/2015] [Indexed: 06/04/2023]
Abstract
This paper reviews the speciation and determination of mercury by various analytical techniques such as atomic absorption spectrometry, voltammetry, inductively coupled plasma techniques, spectrophotometry, spectrofluorometry, high performance liquid chromatography, and gas chromatography. Approximately 126 research papers on the speciation and determination of mercury by various analytical techniques published in international journals since 2013 are reviewed.
Collapse
Affiliation(s)
- Lakshmi Narayana Suvarapu
- Department of Environmental Engineering, Yeungnam University, Gyeongsan-si 712 749, Republic of Korea
| | - Sung-Ok Baek
- Department of Environmental Engineering, Yeungnam University, Gyeongsan-si 712 749, Republic of Korea
| |
Collapse
|
13
|
Ferreira SL, Lemos VA, Silva LO, Queiroz AF, Souza AS, da Silva EG, dos Santos WN, das Virgens CF. Analytical strategies of sample preparation for the determination of mercury in food matrices — A review. Microchem J 2015. [DOI: 10.1016/j.microc.2015.02.012] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
14
|
A new nano-composite potentiometric sensor containing an Hg2+-ion imprinted polymer for the trace determination of mercury ions in different matrices. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.01.014] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
15
|
Wang Q, Yang X, Yang X, Liu P, Wang K, Huang J, Liu J, Song C, Wang J. Colorimetric detection of mercury ion based on unmodified gold nanoparticles and target-triggered hybridization chain reaction amplification. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 136 Pt B:283-287. [PMID: 25448931 DOI: 10.1016/j.saa.2014.08.129] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 08/30/2014] [Accepted: 08/31/2014] [Indexed: 06/04/2023]
Abstract
A novel unmodified gold nanoparticles (AuNPs)-based colorimetric strategy for label-free, specific and sensitive mercury ion (Hg(2+)) detection was demonstrated by using thymine-Hg(2)(+)-thymine (T-Hg(2)(+)-T) recognition mechanism and hybridization chain reaction (HCR) amplification strategy. In this protocol, a structure-switching probe (H0) was designed to recognize Hg(2+) and then propagated a chain reaction of hybridization events between two other hairpin probes (H1 and H2). In the absence of Hg(2+), all hairpin probes could stably coexist in solution, the exposed sticky ends of hairpin probes were capable of stabilizing AuNPs. As a result, salt-induced AuNPs aggregation could be effectively prevented. In the presence of Hg(2+), thymine bases of H0 could specifically interact with Hg(2+) to form stable T-Hg(2)(+)-T complex. Consequently, the hairpin structure of H0 probe was changed. As H1/H2 probes were added, the HCR process could be triggered and nicked double-helixes were formed. Since it was difficult for the formed nicked double-helixes to inhibit salt-induced AuNPs aggregation, a red-to-blue color change was observed in the colloid solution as the salt concentration increased. With the elegant amplification effect of HCR, a detection limit of around 30 nM was achieved (S/N=3), which was about 1-2 orders of magnitudes lower than that of previous unmodified AuNPs-based colorimetric methods. By using the T-Hg(2)(+)-T recognition mechanism, high selectivity was also obtained. As an unmodified AuNPs-based colorimetric strategy, the system was simple in design, convenient in operation, and eliminated the requirements of separation processes, chemical modifications, and sophisticated instrumentations.
Collapse
Affiliation(s)
- Qing Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry & Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China
| | - Xiaohan Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry & Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China
| | - Xiaohai Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry & Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China
| | - Pei Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry & Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China
| | - Kemin Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry & Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China.
| | - Jin Huang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry & Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China
| | - Jianbo Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry & Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China
| | - Chunxia Song
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry & Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China
| | - Jingjing Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry & Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China
| |
Collapse
|
16
|
Gao Y, Shi Z, Zong Q, Wu P, Su J, Liu R. Direct determination of mercury in cosmetic samples by isotope dilution inductively coupled plasma mass spectrometry after dissolution with formic acid. Anal Chim Acta 2014; 812:6-11. [PMID: 24491757 DOI: 10.1016/j.aca.2014.01.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 12/18/2013] [Accepted: 01/02/2014] [Indexed: 11/30/2022]
Abstract
A new method was proposed for the accurate determination of mercury in cosmetic samples based on isotopic dilution (ID)-photochemical vapor generation (PVG)-inductively coupled plasma mass spectrometry (ICP MS) measurement. Cosmetic samples were directly dissolved in formic acid solution and subsequently subjected to PVG for the reduction of mercury into vapor species following by ICP MS detection. Therefore, the risks of analyte contamination and loss were avoided. Highly enriched (201)Hg isotopic spike is added to cosmetics and the isotope ratios of (201)Hg/(202)Hg were measured for the quantitation of mercury. With ID calibration, the influences originating from sample matrixes for the determination of mercury in cosmetic samples have been efficiently eliminated. The effects of several experimental parameters, such as the concentration of the formic acid, and the flow rates of carrier gas and sample were investigated. The method provided good reproducibility and the detection limits were found to be 0.6 pg mL(-1). Finally, the developed method was successfully applied for the determination of mercury in six cosmetic samples and a spike test was performed to verify the accuracy of the method.
Collapse
Affiliation(s)
- Ying Gao
- Sichuan Provincial Key Laboratory of Nuclear Technology in Geology, College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China
| | - Zeming Shi
- Sichuan Provincial Key Laboratory of Nuclear Technology in Geology, College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China
| | - Qinxia Zong
- Sichuan Provincial Key Laboratory of Nuclear Technology in Geology, College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China
| | - Peng Wu
- Sichuan Provincial Key Laboratory of Nuclear Technology in Geology, College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China
| | - Jing Su
- Sichuan Provincial Key Laboratory of Nuclear Technology in Geology, College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China
| | - Rui Liu
- Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions, College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China.
| |
Collapse
|