1
|
Molnarova L, Halesova T, Tomesova D, Vaclavikova M, Bosakova Z. Monitoring Pharmaceuticals and Personal Care Products in Healthcare Effluent Wastewater Samples and the Effectiveness of Drug Removal in Wastewater Treatment Plants Using the UHPLC-MS/MS Method. Molecules 2024; 29:1480. [PMID: 38611760 PMCID: PMC11013191 DOI: 10.3390/molecules29071480] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 03/20/2024] [Accepted: 03/21/2024] [Indexed: 04/14/2024] Open
Abstract
A multi-residue UHPLC-MS/MS analytical method, previously developed for monitoring 52 pharmaceuticals in drinking water, was used to analyse these pharmaceuticals in wastewater originating from healthcare facilities in the Czech Republic. Furthermore, the methodology was expanded to include the evaluation of the effectiveness of drug removal in Czech wastewater treatment plants (WWTPs). Of the 18 wastewater samples analysed by the validated UHPLC-MS/MS, each sample contained at least one quantifiable analyte. This study reveals the prevalence of several different drugs; mean concentrations of 702 μg L-1 of iomeprol, 48.8 μg L-1 of iopromide, 29.9 μg L-1 of gabapentin, 42.0 μg L-1 of caffeine and 82.5 μg L-1 of paracetamol were present. An analysis of 20 samples from ten WWTPs revealed different removal efficiencies for different analytes. Paracetamol was present in the inflow samples of all ten WWTPs and its removal efficiency was 100%. Analytes such as caffeine, ketoprofen, naproxen or atenolol showed high removal efficiencies exceeding 80%. On the other hand, pharmaceuticals like furosemide, metoprolol, iomeprol, zolpidem and tramadol showed lower removal efficiencies. Four pharmaceuticals exhibited higher concentrations in WWTP effluents than in the influents, resulting in negative removal efficiencies: warfarin at -9.5%, indomethacin at -53%, trimethoprim at -54% and metronidazole at -110%. These comprehensive findings contribute valuable insights to the pharmaceutical landscape of wastewater from healthcare facilities and the varied removal efficiencies of Czech WWTPs, which together with the already published literature, gives a more complete picture of the burden on the aquatic environment.
Collapse
Affiliation(s)
- Lucia Molnarova
- Department of Analytical Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 43 Prague, Czech Republic;
| | - Tatana Halesova
- ALS Czech Republic, Na Harfe 223/9, 190 00 Prague, Czech Republic; (T.H.); (D.T.); (M.V.)
| | - Daniela Tomesova
- ALS Czech Republic, Na Harfe 223/9, 190 00 Prague, Czech Republic; (T.H.); (D.T.); (M.V.)
| | - Marta Vaclavikova
- ALS Czech Republic, Na Harfe 223/9, 190 00 Prague, Czech Republic; (T.H.); (D.T.); (M.V.)
| | - Zuzana Bosakova
- Department of Analytical Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 43 Prague, Czech Republic;
| |
Collapse
|
2
|
Molnarova L, Halesova T, Vaclavikova M, Bosakova Z. Monitoring Pharmaceuticals and Personal Care Products in Drinking Water Samples by the LC-MS/MS Method to Estimate Their Potential Health Risk. Molecules 2023; 28:5899. [PMID: 37570870 PMCID: PMC10421426 DOI: 10.3390/molecules28155899] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/01/2023] [Accepted: 08/02/2023] [Indexed: 08/13/2023] Open
Abstract
(1) The occurrence and accumulation of pharmaceuticals and personal care products in the environment are recognized scientific concerns. Many of these compounds are disposed of in an unchanged or metabolized form through sewage systems and wastewater treatment plants (WWTP). WWTP processes do not completely eliminate all active substances or their metabolites. Therefore, they systematically leach into the water system and are increasingly contaminating ground, surface, and drinking water, representing a health risk largely ignored by legislative bodies. Especially during the COVID-19 pandemic, a significantly larger amount of medicines and protective products were consumed. It is therefore likely that contamination of water sources has increased, and in the case of groundwater with a delayed effect. As a result, it is necessary to develop an accurate, rapid, and easily available method applicable to routine screening analyses of potable water to monitor and estimate their potential health risk. (2) A multi-residue UHPLC-MS/MS analytical method designed for the identification of 52 pharmaceutical products was developed and used to monitor their presence in drinking water. (3) The optimized method achieved good validation parameters, with recovery of 70-120% of most analytes and repeatability achieving results within 20%. In real samples of drinking water, at least one analyte above the limit of determination was detected in each of the 15 tap water and groundwater samples analyzed. (4) These findings highlight the need for legislation to address pharmaceutical contamination in the environment.
Collapse
Affiliation(s)
- Lucia Molnarova
- Department of Analytical Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 43 Prague, Czech Republic;
| | - Tatana Halesova
- ALS Czech Republic, Na Harfe 223/9, 190 00 Prague, Czech Republic; (T.H.); (M.V.)
| | - Marta Vaclavikova
- ALS Czech Republic, Na Harfe 223/9, 190 00 Prague, Czech Republic; (T.H.); (M.V.)
| | - Zuzana Bosakova
- Department of Analytical Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 43 Prague, Czech Republic;
| |
Collapse
|
3
|
Borsatto JVB, Maciel EVS, Cifuentes A, Lanças FM. Applicability and Limitations of a Capillary-LC Column-Switching System Using Hybrid Graphene-Based Stationary Phases. Molecules 2023; 28:4999. [PMID: 37446660 DOI: 10.3390/molecules28134999] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/15/2023] [Accepted: 06/19/2023] [Indexed: 07/15/2023] Open
Abstract
Graphene oxide sheets fixed over silica particles (SiGO) and their modification functionalized with C18 and endcapped (SiGO-C18ec) have been reported as sorbents for extraction and analytical columns in LC. In this study, a SiGO column was selected as the extraction column and a SiGO-C18ec as the analytical column to study the applicability and limitations of a column-switching system composed exclusively of columns packed with graphene-based sorbents. Pyriproxyfen and abamectin B1a were selected as the analytes, and orange-flavored carbonated soft drinks as the matrix. The proposed system could be successfully applied to the pyriproxyfen analysis in a concentration range between 0.5 to 25 µg/mL presenting a linearity of R2 = 0.9931 and an intra-day and inter-day accuracy of 82.2-111.4% (RSD < 13.3%) and 95.5-99.8% (RSD < 12.7%), respectively. Furthermore, the matrix composition affected the area observed for the pyriproxyfen: the higher the concentration of orange juice in the soft drink, the higher the pyriproxyfen the signal observed. Additionally, the SiGO extraction column presented a life use of 120 injections for this matrix. In contrast, the proposed system could not apply to the analysis of abamectin B1a, and the SiGO-C18ec analytical column presented significant tailing compared to a similar approach with a C18 analytical column.
Collapse
Affiliation(s)
- João Victor Basolli Borsatto
- Laboratory of Chromatography, Institute of Chemistry at Sao Carlos, University of Sao Paulo, P.O. Box 780, Sao Carlos 13566590, Brazil
- Laboratory of Foodomics, Institute of Food Science Research (CIAL, CSIC), Nicolás Cabrera 9, 28049 Madrid, Spain
| | - Edvaldo Vasconcelos Soares Maciel
- Laboratory of Chromatography, Institute of Chemistry at Sao Carlos, University of Sao Paulo, P.O. Box 780, Sao Carlos 13566590, Brazil
- Clemens Schöpf Institute, Department of Chemistry, Technical University of Darmstadt, 64287 Darmstadt, Germany
| | - Alejandro Cifuentes
- Laboratory of Foodomics, Institute of Food Science Research (CIAL, CSIC), Nicolás Cabrera 9, 28049 Madrid, Spain
| | - Fernando Mauro Lanças
- Laboratory of Chromatography, Institute of Chemistry at Sao Carlos, University of Sao Paulo, P.O. Box 780, Sao Carlos 13566590, Brazil
| |
Collapse
|
4
|
Zhu WH, Wang C, Zhang LL, Yuan M. [Direct determination of five xanthic acids in water by ultra performance liquid chromatography-tandem mass spectrometry]. Se Pu 2023; 41:339-347. [PMID: 37005921 PMCID: PMC10071354 DOI: 10.3724/sp.j.1123.2022.09002] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023] Open
Abstract
Xanthates with different alkyl groups, such as ethyl, propyl, butyl, and amyl groups, are widely used in large quantities in the mining flotation of metallic minerals. Xanthates enter environmental waters through mineral processing wastewater discharge and are ionized or hydrolyzed into ions or molecules of xanthic acids (XAs) in water. XAs endanger aquatic plants and animals, as well as human health. To the best of our knowledge, XA analysis is mainly limited to butyl xanthate. Moreover, the isomers and congeners of XAs cannot be determined separately using the existing methods. Herein, a novel method based on ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was established to separate and analyze five XAs, namely, ethyl-, isopropyl-, n-butyl-, isobutyl-, and amyl-XAs, in water. Water samples were filtered through a 0.22 μm hydrophilic polytetrafluoroethylene (PTFE) membrane and directly injected into the UPLC-MS/MS instrument. Separation was performed using a Waters Acquity UPLC BEH C18 column (100 mm×2.1 mm, 1.7 μm) with ammonia solution (pH 11)-acetonitrile (9∶1, v/v) as the mobile phase for isocratic elution. The five XAs were detected in the negative electrospray ionization (ESI-) and multiple reaction monitoring (MRM) modes. An internal standard method was used for quantification. The pretreatment and UPLC-MS/MS conditions were comprehensively optimized to achieve the separation and analysis of the five XAs via direct injection. The XAs showed negligible adsorption on hydrophobic PTFE, hydrophilic PTFE, hydrophilic polypropylene, and polypropylene membranes during filtration. However, the amyl-XA showed obvious adsorption on nylon and polyether sulfone membranes. The five XAs mainly formed [M-H]- parent ions in the ESI- mode and the main daughter ions obtained following collisional fragmentation depended on the alkyl groups of the XAs. Increasing the pH of the ammonia solution in the mobile phase to 11 led to the isomeric separation of n-butyl- and isobutyl-XAs. The optimized mobile phase inhibited the tailing of the chromatographic peak of amyl-XA and effectively improved all the chromatographic peak shapes of XAs. The BEH C18 column was selected as the chromatographic column owing to its better compatibility with high-pH solutions compared with the T3 C18 column. Preservation experiments conducted over 8 d showed that the concentration of all five XAs decreased over time at room temperature; among the XAs analyzed, the concentration of ethyl-XA revealed the most significant decrease. However, the recoveries of the five XAs at 4 and -20 ℃ remained high, ranging from 101% to 105% and from 100% to 106%, respectively, on the 8th day. The preservation observed with a high concentration of XAs was similar to that found with a low concentration. The preservation time was extended to 8 days at pH 11 and 4 ℃ away from the light. No significant matrix effects were observed for the five XA samples in surface water and groundwater, but industrial sewage exerted obvious matrix inhibitory effects on ethyl- and isopropyl-XAs. Owing to the short retention times of ethyl- and isopropyl-XAs, the co-fluxed interferents in the industrial sewage depressed the MS signals. The five XAs showed good linearity in the range of 0.25-100 μg/L, with correlation coefficients greater than 0.9996. The method detection limits were as low as 0.03-0.04 μg/L, and the intra- and inter-day precisions were 1.3%-2.1% and 3.3%-4.1%, respectively. The recoveries obtained under low, medium, and high spiked levels (1.00, 20.0, 80.0 μg/L) were 96.9%-133%, 100%-107%, and 104%-112%, respectively. The corresponding RSDs were 2.1%-3.0%, 0.4%-1.9%, and 0.4%-1.6%, respectively. The optimized method was successfully applied to the analysis of XAs in surface water, groundwater, and industrial sewage. The method could separate and detect various congeners and isomers of XAs without the need for cumbersome pretreatment processes, and its advantages include smaller sample requirements, simpler operation, higher sensitivity, and longer preservation time. The proposed technique presents excellent application potential in XA environmental monitoring and water evaluation, and mineral flotation studies.
Collapse
Affiliation(s)
- Wei-Hong Zhu
- China National Environmental Monitoring Centre, Beijing 100012, China
- Baoji Environmental Monitoring Station, Baoji 721000, China
| | - Chao Wang
- China National Environmental Monitoring Centre, Beijing 100012, China
| | - Lin-Lin Zhang
- China National Environmental Monitoring Centre, Beijing 100012, China
| | - Mao Yuan
- China National Environmental Monitoring Centre, Beijing 100012, China
| |
Collapse
|
5
|
Gray J, Guo B, Bearden R, Manka J. A fast, fully validated GC-MS method using a simplified pretreatment for the quantification of short and branched chain fatty acids in human stool. J Mass Spectrom 2022; 57:e4817. [PMID: 35266592 DOI: 10.1002/jms.4817] [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: 12/19/2021] [Revised: 02/06/2022] [Accepted: 02/10/2022] [Indexed: 06/14/2023]
Abstract
The study of short (SCFAs) and branched chain fatty acids (BCFAs) in human stool related to gastrointestinal diseases, gut microbiota, metabolism, and diet has dramatically increased. As a result, a fast, reliable method with minimal pretreatment is needed for quantification of these metabolites (acetic, propionic, isobutyric, butyric, isovaleric, valeric, and caproic acid) in stool. Therefore, a GC-MS method meeting this criterion was developed. A bias sampling study showed no statistical difference (p > 0.05) in analyte means when comparing 100 mg subsamples of homogenized to non-homogenized samples (n = 6, p values 0.153-0.910). Stool samples were homogenized, diluted with 80:20 water:methanol (v/v), and adjusted to a pH of 1.5-2.5. Samples were vortexed, centrifuged, and directly injected into the GC-MS using pulsed splitless injection offering twofold-to-threefold signal enhancement over a 10:1 split injection. DB-FATWAX Ultra Inert Polyethylene Glycol (PEG) Column showed no peak tailing, reduced responses, or retention time shifts after 1,476 stool injections, while other columns failed before 361 injections. Intra- and inter-day accuracy for stool supernatant samples ranged from -10.21% to 8.88% and -13.25% to 9.91%, while intra- and inter-day precision ranged from 0.21% to 1.21% and 0.89% to 2.84% coefficient of variation (CV), respectively. This method demonstrates excellent linearity (0.9999-1.0000) and low limits of quantification (1.50-8.01 μM). Stool samples proved stable stored at -20°C up to 28 days, and recoveries ranged from 85.04% to 106.59%. Matrix effects in stool are non-significant determined by comparing standard and stool supernatant calibration curve slopes (p > 0.05).
Collapse
Affiliation(s)
- Justin Gray
- Department of Chemistry, Cleveland State University, Cleveland, Ohio, USA
| | - Baochuan Guo
- Department of Chemistry, Cleveland State University, Cleveland, Ohio, USA
| | - Rebecca Bearden
- Department of Chemistry, Cleveland State University, Cleveland, Ohio, USA
| | - Julie Manka
- Department of Chemistry, John Carroll University, University Heights, Ohio, USA
| |
Collapse
|
6
|
Zheng Q, Dewapriya P, Eaglesham G, Reeks T, Thompson J, Ahmed F, Prasad P, Thomas KV, Mueller JF, Thai PK. Direct injection analysis of oxypurinol and metformin in wastewater by hydrophilic interaction liquid chromatography coupled to tandem mass spectrometry. Drug Test Anal 2022; 14:1519-1524. [PMID: 35355431 PMCID: PMC9543911 DOI: 10.1002/dta.3266] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 03/08/2022] [Accepted: 03/28/2022] [Indexed: 11/06/2022]
Abstract
The increasing global prevalence of gout and diabetes has led to a rise in the use of their respective medications, allopurinol and metformin. These are excreted via urine as oxypurinol and metformin and are discharged into wastewater and the environment. Current environmental monitoring of those two polar chemicals requires labour intensive and potentially inefficient sample pre‐treatments, such as using solid‐phase extraction or freeze‐drying. This study validated a sensitive and simple method using direct‐injection LC–MS/MS for the simultaneous measurement of oxypurinol and metformin in wastewater. The final method utilised a hydrophilic interaction liquid chromatography together with simple filtration through 0.2 μm regenerated cellulose filter followed by dilution in acetonitrile with a dilution factor of 10. The developed method was validated with the limit of quantifications (LOQ) of 0.11 and 0.34 μg/L for metformin and oxypurinol, respectively. The new method was applied to 42 influent wastewater samples and 6 effluent samples collected from 6 Australian wastewater treatment plants. Both compounds were detected well above the LOQ at concentrations 29–214 μg/L in influent and 2–53 μg/L in effluent for metformin, and 24–248 μg/L in influent and 4–81 μg/L in effluent for oxypurinol, demonstrating its high applicability.
Collapse
Affiliation(s)
- Qiuda Zheng
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Woolloongabba, Queensland, Australia
| | - Pradeep Dewapriya
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Woolloongabba, Queensland, Australia
| | - Geoff Eaglesham
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Woolloongabba, Queensland, Australia
| | - Tim Reeks
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Woolloongabba, Queensland, Australia
| | - Jack Thompson
- Organic Chemistry, Queensland Health Forensic and Scientific Services (QHFSS), Coopers Plains, Queensland, Australia
| | - Fahad Ahmed
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Woolloongabba, Queensland, Australia
| | - Pritesh Prasad
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Woolloongabba, Queensland, Australia
| | - Kevin V Thomas
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Woolloongabba, Queensland, Australia
| | - Jochen F Mueller
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Woolloongabba, Queensland, Australia
| | - Phong K Thai
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Woolloongabba, Queensland, Australia
| |
Collapse
|
7
|
Lin GP, Vadhwana B, Belluomo I, Boshier PR, Španěl P, Hanna GB. Cross Platform Analysis of Volatile Organic Compounds Using Selected Ion Flow Tube and Proton-Transfer-Reaction Mass Spectrometry. J Am Soc Mass Spectrom 2021; 32:1215-1223. [PMID: 33831301 DOI: 10.1021/jasms.1c00027] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Volatile breath metabolites serve as potential disease biomarkers. Online mass spectrometry (MS) presents real-time quantification of breath volatile organic compounds (VOCs). The study aims to assess the relationship between two online analytical mass spectrometry techniques in the quantification of target breath metabolites: selected ion flow tube mass spectrometry (SIFT-MS) and proton-transfer-reaction time-of-flight mass spectrometry (PTR-ToF-MS). The two following techniques were employed: (i) direct injection with bag sampling using SIFT-MS and PTR-ToF-MS and (ii) direct injection and thermal desorption (TD) tube comparison using PTR-ToF-MS. The concentration of abundant breath metabolites, acetone and isoprene, demonstrated a strong positive linear correlation between both mass spectrometry techniques (r = 0.97, r = 0.89, respectively; p < 0.001) and between direct injection and TD tube (r = 0.97, r = 0.92, respectively; p < 0.001) breath sampling techniques. This was reflected for the majority of short chain fatty acids and alcohols tested (r > 0.80, p < 0.001). Analyte concentrations were notably higher with the direct injection of a sampling bag compared to the TD method. All metabolites produced a high degree of agreement in the detection range of VOCs between SIFT-MS and PTR-ToF-MS, with the majority of compounds falling within 95% of the limits of agreement with Bland-Altman analysis. The cross platform analysis of exhaled breath demonstrates strong positive correlation coefficients, linear regression, and agreement in target metabolite detection rates between both breath sampling techniques. The study demonstrates the transferability of using data outputs between SIFT-MS and PTR-ToF-MS. It supports the implementation of a TD platform in multi-site studies for breath biomarker research in order to facilitate sample transport between clinics and the laboratory.
Collapse
Affiliation(s)
- Geng-Ping Lin
- Department of Surgery and Cancer, Imperial College London, St. Mary's Hospital, London W2 1PE, United Kingdom
- Division of Colon and Rectal Surgery, Chang Gung Memorial Hospital, Chang Gung University, Tao-Yuan City 33305, Taiwan
| | - Bhamini Vadhwana
- Department of Surgery and Cancer, Imperial College London, St. Mary's Hospital, London W2 1PE, United Kingdom
| | - Ilaria Belluomo
- Department of Surgery and Cancer, Imperial College London, St. Mary's Hospital, London W2 1PE, United Kingdom
| | - Piers R Boshier
- Department of Surgery and Cancer, Imperial College London, St. Mary's Hospital, London W2 1PE, United Kingdom
| | - Patrik Španěl
- Department of Surgery and Cancer, Imperial College London, St. Mary's Hospital, London W2 1PE, United Kingdom
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Prague 182 23, Czech Republic
| | - George B Hanna
- Department of Surgery and Cancer, Imperial College London, St. Mary's Hospital, London W2 1PE, United Kingdom
| |
Collapse
|
8
|
Bai X, Guo D, Zheng Y, Wang S, Liu S. Comparison of three common pre-treatment methods for the determination of lead contents by GFAAS in Chinese health-care wines. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2021; 38:630-636. [PMID: 33721542 DOI: 10.1080/19440049.2021.1885750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Sample pre-treatment plays an important role in sample analysis, which directly affects the accuracy and reliability of the results. In this work we studied the influence of three common sample pre-treatment methods (direct injection, microwave digestion and wet digestion) on the determination of lead (Pb) content of Chinese health-care wines by graphite furnace atomic absorption spectrometry (GFAAS). Six different brands of Chinese health wines were selected for the research. After each Chinese health-care wine was digested by three digestion methods, GFAAS was used to detect the Pb content of the samples. For the selected six different health-care wines, the results showed that the Pb content obtained by GFAAS with different pre-treatment methods were different. Microwave digestion had the best recovery, and was proposed to be applied to the pre-treatment of many kinds of health-care wines, while the direct injection method might be suitable only for health-care wine with lesser amounts of ingredients such as sugar. In the practical work, due to the complexity of the base composition of Chinese health-care wines, currently there is no relevant standard analysis method for the pre-treatment of Chinese health wines. According to the accuracies of the three chosen common pre-treatment methods, it was proposed that microwave digestion might be more suitable as a standard digestion method for the determination of Pb in Chinese health-care wines. This work could provide theoretical support for the further establishment of a standard analytical method for the determination of lead and other (heavy) metal elements in Chinese health wines by GFAAS and other methods.
Collapse
Affiliation(s)
- Xue Bai
- School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Dongmei Guo
- School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Ye Zheng
- School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Shue Wang
- School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Shufang Liu
- School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| |
Collapse
|
9
|
Edwards ME, De Luca T, Ferreira CR, Collins KS, Eadon MT, Benson EA, Sobreira TJP, Cooks RG. Multiple reaction monitoring profiling as an analytical strategy to investigate lipids in extracellular vesicles. J Mass Spectrom 2021; 56:e4681. [PMID: 33210411 PMCID: PMC7941191 DOI: 10.1002/jms.4681] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/06/2020] [Accepted: 11/09/2020] [Indexed: 06/11/2023]
Abstract
Extracellular vesicles (EVs) convey information used in cell-to-cell interactions. Lipid analysis of EVs remains challenging because of small sample amounts available. Lipid discovery using traditional mass spectrometry platforms based on liquid chromatography and high mass resolution typically employs milligram sample amounts. We report a simple workflow for lipid profiling of EVs based on multiple reaction monitoring (MRM) profiling that uses microgram amounts of sample. After liquid-liquid extraction, individual EV samples were injected directly into the electrospray ionization (ESI) ion source at low flow rates (10 μl/min) and screened for 197 MRM transitions chosen to be a characteristic of several classes of lipids. This choice was based on a discovery experiment, which applied 1,419 MRMs associated with multiple lipid classes to a representative pooled sample. EVs isolated from 12 samples of human lymphocytes and 16 replicates from six different rat cells lines contained an estimated amount of total lipids of 326 to 805 μg. Samples showed profiles that included phosphatidylcholine (PC), sphingomyelin (SM), cholesteryl ester (CE), and ceramide (Cer) lipids, as well as acylcarnitines. The lipid profiles of human lymphocyte EVs were distinguishable using principal component and cluster analysis in terms of prior antibody and drug exposure. Lipid profiles of rat cell lines EV's were distinguishable by their tissue of origin.
Collapse
Affiliation(s)
- Madison E Edwards
- Department of Chemistry, Purdue University, West Lafayette, Indiana, 47907, USA
| | - Thomas De Luca
- Division of Clinical Pharmacology, Indiana University School of Medicine, Indianapolis, Indiana, 46202, USA
| | - Christina R Ferreira
- Department of Chemistry, Purdue University, West Lafayette, Indiana, 47907, USA
- Bindley Bioscience Center, Purdue University, West Lafayette, Indiana, 47907, USA
| | - Kimberly S Collins
- Division of Clinical Pharmacology, Indiana University School of Medicine, Indianapolis, Indiana, 46202, USA
- Division of Nephrology, Indiana University School of Medicine, Indianapolis, Indiana, 46202, USA
| | - Michael T Eadon
- Division of Clinical Pharmacology, Indiana University School of Medicine, Indianapolis, Indiana, 46202, USA
- Division of Nephrology, Indiana University School of Medicine, Indianapolis, Indiana, 46202, USA
| | - Eric A Benson
- Division of Clinical Pharmacology, Indiana University School of Medicine, Indianapolis, Indiana, 46202, USA
| | - Tiago J P Sobreira
- Bindley Bioscience Center, Purdue University, West Lafayette, Indiana, 47907, USA
| | - Robert Graham Cooks
- Department of Chemistry, Purdue University, West Lafayette, Indiana, 47907, USA
| |
Collapse
|
10
|
Abstract
Here, we show that the turn-on voltage for the hydrogen evolution reaction on a graphene surface can be tuned in a semiconductor-insulator-graphene (SIG) device immersed in a solution. Specifically, it is shown that the hydrogen evolution reaction (HER) onset for the graphene can shift by >0.8 V by application of a voltage across a graphene-Al2O3-silicon junction. We show that this shift occurs due to the creation of a hot electron population in graphene due to tunneling from the Si to graphene. Through control experiments, we show that the presence of the graphene is necessary for this behavior. By analyzing the silicon, graphene, and solution current components individually, we find an increase in the silicon current despite a fixed graphene-silicon voltage, corresponding to an increase in the HER current. This additional silicon current appears to directly drive the electrochemical reaction, without modifying the graphene current. We term this current "direct injection current" and hypothesize that this current occurs due to electrons injected from the silicon into graphene that drives the HER before any electron-electron scattering occurs in the graphene. To further determine whether hot electrons injected at different energies could explain the observed total solution current, the nonequilibrium electron dynamics was studied using a 2D ensemble Monte Carlo Boltzmann transport equation (MCBTE) solver. By rigorously considering the key scattering mechanisms, we show that the injected hot electrons can significantly increase the available electron flux at high energies. These results show that semiconductor-insulator-graphene devices are a platform which can tune the electrochemical reaction rate via multiple mechanisms.
Collapse
Affiliation(s)
- Hyun Uk Chae
- Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, California 90089, United States
| | - Ragib Ahsan
- Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, California 90089, United States
| | - Jun Tao
- Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, California 90089, United States
| | - Stephen B Cronin
- Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, California 90089, United States
| | - Rehan Kapadia
- Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, California 90089, United States
| |
Collapse
|
11
|
He S, Cao X, Wu H, Li T, Zhang M, Liang Y, Chen B. [Rapid determination of glyphosate, aminomethyl phosphonic acid, glufosinate, and ethephon residues in environmental water by direct injection-ultra performance liquid chromatography-triple quadrupole mass spectrometry]. Se Pu 2019; 37:1179-84. [PMID: 31642270 DOI: 10.3724/SP.J.1123.2019.05011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
A simple method based on direct injection-ultra performance liquid chromatography-triple quadrupole tandem mass spectrometry (UPLC-MS/MS) was established for the rapid determination of glyphosate, aminomethyl phosphonic acid, glufosinate, and ethephon residues in environmental water. The water samples were filtered through a 0.22-μm filter membrane or frozen and centrifuged to remove impurities, and then, the filtrate was directly subjected to quantitative analysis without derivatization. The analytes were separated on a Metrosep A Supp 5 column (150 mm×4.0 mm, 5 μm), and gradient elution was carried out using an ammonium bicarbonate-ammonia solution as the mobile phase. The data were collected by positive electrospray ionization in the multiple reaction monitoring (MRM) mode. The results showed that the correlation coefficients (r) of the linear calibration curves were greater than 0.999 in the corresponding linear ranges (0.50-50.0 μg/L). The detection limits of the analytes were 0.05-0.09 μg/L. The recoveries of glyphosate, aminomethyl phosphonic acid, glufosinate, and ethephon were in the ranges 76.3%-108%, 83.0%-107%, and 87.0%-105% at low, medium, and high spiked levels, respectively. The corresponding relative standard deviations were in the ranges 2.0%-12.3%, 2.4%-5.6%, and 2.7%-6.8%. Using this method, 34 water samples collected from Hainan Province were analyzed, among which 30 drinking water sources were found to be free from the four pesticides. Glyphosate and aminomethyl phosphonic acid were detected in three water samples near a betel nut orchard, while glufosinate and aminomethyl phosphonic acid were detected in a water sample near a banana orchard. This method is advantageous over the traditional derivatization method because of its simple operation, good reproducibility, and high accuracy; furthermore, the matrix interference effect is absent. Thus, this method is suitable for analyzing glyphosate, aminomethyl phosphonic acid, glufosinate, and ethephon residues in environmental water samples.
Collapse
|
12
|
Silva LJG, Rodrigues AP, Pereira AMPT, Lino CM, Pena A. Ochratoxin A in the Portuguese Wine Market, Occurrence and Risk Assessment. Food Addit Contam Part B Surveill 2019; 12:145-149. [PMID: 30909816 DOI: 10.1080/19393210.2019.1595169] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Ochratoxin A (OTA) is mainly found in cereals and cereal-based foodstuffs, but also in wine. Being one of the most consumed alcoholic drinks in Portugal and one of the main sources of human exposure to OTA, wine monitoring and exposure studies are essential. The analytical methodology consisted of the direct injection of the filtered samples into the liquid chromatograph, equipped with fluorescent detection (LC-FLD). Linearity was adequate, both in mobile phase and in matrix-matched solutions, with R2 values higher than 0.997. The limits of detection were 0.08 and 0.39 µg/L for white and red wine, respectively and recoveries were above 91.9%. One hundred wine samples acquired on the Portuguese market were investigated. In 5 samples the OTA was detected, with the red wine presenting higher frequency of contamination. Regarding the risk to human health it was observed that the estimated weekly intake (EWI) is considerably lower than the established tolerable weekly intake (TWI).
Collapse
Affiliation(s)
- Liliana J G Silva
- a LAQV, REQUIMTE, Laboratory of Bromatology and Pharmacognosy, Faculty of Pharmacy , University of Coimbra, Polo III , Coimbra , Portugal
| | - Ana P Rodrigues
- a LAQV, REQUIMTE, Laboratory of Bromatology and Pharmacognosy, Faculty of Pharmacy , University of Coimbra, Polo III , Coimbra , Portugal
| | - André M P T Pereira
- a LAQV, REQUIMTE, Laboratory of Bromatology and Pharmacognosy, Faculty of Pharmacy , University of Coimbra, Polo III , Coimbra , Portugal
| | - Celeste M Lino
- a LAQV, REQUIMTE, Laboratory of Bromatology and Pharmacognosy, Faculty of Pharmacy , University of Coimbra, Polo III , Coimbra , Portugal
| | - Angelina Pena
- a LAQV, REQUIMTE, Laboratory of Bromatology and Pharmacognosy, Faculty of Pharmacy , University of Coimbra, Polo III , Coimbra , Portugal
| |
Collapse
|
13
|
Mishra P, Albiol-Chiva J, Bose D, Durgbanshi A, Peris-Vicente J, Carda-Broch S, Esteve-Romero J. Optimization and Validation of a Chromatographic Method for the Quantification of Isoniazid in Urine of Tuberculosis Patients According to the European Medicines Agency Guideline. Antibiotics (Basel) 2018; 7:E107. [PMID: 30545003 PMCID: PMC6316101 DOI: 10.3390/antibiotics7040107] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 12/08/2018] [Accepted: 12/09/2018] [Indexed: 12/11/2022] Open
Abstract
Isoniazid is a drug that is widely used against tuberculosis. However, it shows high interpatient variability in metabolism kinetics and clinical effect, which complicates the prescription of the medication and jeopardizes the success of the therapy. Therefore, in a specific patient, the pharmacokinetics of the drug must be elucidated to decide the proper dosage and intake frequency to make the drug suitable for therapeutic drug monitoring. This can be performed by the quantification of the drug in urine as this process is non-invasive and allows the effects of long-time exposure to be inferred. The paper describes the development of a micellar liquid chromatographic method to quantify isoniazid in urine samples. Extraction steps were avoided, making the procedure easy to handle and reducing the waste of toxic organic solvents. Isoniazid was eluted in less than 5 min without interference from other compounds of the urine using a mobile phase containing 0.15 SDS⁻12.5% 1-propanol (v/v)⁻Na₂HPO₄ 0.01 M buffered at pH 7, running at 1 mL/min under isocratic mode through a C18 column with the detection wavelength at 265 nm. The method was validated by following the requirements of the Guidelines on Bioanalytical Method Validation issued by the European Medicines Agency (EMA) in terms of selectivity, calibration curve (r² = 0.9998 in the calibration range (0.03⁻10.0 μg/mL), limit of detection and quantification (10 and 30 ng/mL respectively), precision (<16.0%), accuracy (-0.9 to +8.5%), carry-over, matrix effect, and robustness. The developed method was applied to quantify isoniazid in urine samples of patients of an Indian hospital with good results. The method was found to be useful for routine analysis to check the amount of isoniazid in these patients and could be used in its therapeutic monitoring.
Collapse
Affiliation(s)
- Pooja Mishra
- Department of Chemistry, University Doctor Harisingh Gour Vishwavidyalaya (A Central University), Sagar, Madhya Pradesh 470003, India.
| | - Jaume Albiol-Chiva
- Department of Chemistry, University Doctor Harisingh Gour Vishwavidyalaya (A Central University), Sagar, Madhya Pradesh 470003, India.
| | - Devasish Bose
- Department of Criminology and Forensic Science, Harisingh Gour Vishwavidyalaya (A Central University), Sagar, Madhya Pradesh 470003, India.
| | - Abhilasha Durgbanshi
- Department of Chemistry, University Doctor Harisingh Gour Vishwavidyalaya (A Central University), Sagar, Madhya Pradesh 470003, India.
| | - Juan Peris-Vicente
- Química Bioanalítica, Departament de Química Física i Analítica, Escola Superior de Tecnologia i Ciències Experimentals, Universitat Jaume I, 12071 Castelló, Spain.
| | - Samuel Carda-Broch
- Química Bioanalítica, Departament de Química Física i Analítica, Escola Superior de Tecnologia i Ciències Experimentals, Universitat Jaume I, 12071 Castelló, Spain.
| | - Josep Esteve-Romero
- Química Bioanalítica, Departament de Química Física i Analítica, Escola Superior de Tecnologia i Ciències Experimentals, Universitat Jaume I, 12071 Castelló, Spain.
| |
Collapse
|
14
|
Zhang X, Cai X, Zhang X, Li R. [Simultaneous rapid determination of 12 microcystins and one nodularin in water by direct injection-ultra performance liquid chromatography-triple quadrupole mass spectrometry]. Se Pu 2017; 35:1286-93. [PMID: 29372779 DOI: 10.3724/SP.J.1123.2017.09002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
A rapid method was developed for the simultaneous determination of 12 microcystins (MCs) and one nodularin (NOD) in water by direct injection-ultra performance liquid chromatography-triple quadrupole mass spectrometry (UPLC-MS/MS). The water samples were first diluted with equal volume of methanol, and then filtered through polyether sulfone (PES) syringe filter. The filtrates were directly injected into the UPLC system. The separation of the analytes was carried out on an ACQUITY UPLC BEH 300 C18 column (100 mm×2.1 mm, 1.7 μm) with gradient elution using mobile phases of acetonitrile containing 0.1% (v/v) formic acid and 0.2% (v/v) formic acid aqueous solution. The 12 microcystins and one nodularin were detected by positive electrospray ionization in the multiple reaction monitoring (MRM) mode, and quantified by standard solvent external standard method. The limits of detection were 0.03-0.1 μg/L and the limits of quantification were 0.1-0.3 μg/L. The recoveries were in the range of 79.5%-123% with the relative standard deviations ranging from 1.0% to 20% (n=6). The method is simple, sensitive and accurate, and has been successfully applied to the detection of the 13 kinds of algae toxins in water.
Collapse
|
15
|
Graves C, Ely S, Idowu O, Newton C, Kim S. Direct Gallbladder Indocyanine Green Injection Fluorescence Cholangiography During Laparoscopic Cholecystectomy. J Laparoendosc Adv Surg Tech A 2017; 27:1069-1073. [PMID: 28574801 DOI: 10.1089/lap.2017.0070] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Intravenous injection of indocyanine green (ICG) is used to illuminate extrahepatic biliary anatomy. Fluorescence of biliary structures may lower surgical complications that can arise due to inadvertent injury to the common bile duct. We describe a method of injecting ICG directly into the gallbladder to define the cystic duct and common bile duct anatomy. MATERIALS AND METHODS A standard laparoscopic cholecystectomy was performed using a laparoscope with near-infrared imaging capability. Before dissection, the gallbladder was punctured with a cholangiogram catheter or a pigtail catheter to aspirate the bile within the gallbladder. The aspirated bile is mixed with ICG solution, which is reinjected into the gallbladder to fluoresce the gallbladder, cystic duct, and common bile duct structures. RESULTS Eleven patients underwent direct gallbladder ICG injection for fluorescence cholangiography during cholecystectomy. Direct gallbladder ICG injection clearly defined the extrahepatic biliary anatomy, including the cystic duct-common bile duct junction, by fluorescence. In addition, the dissection plane between the gallbladder and the liver is highlighted with the gallbladder ICG fluorescence. CONCLUSIONS Direct gallbladder ICG injection provides immediate visualization of extrahepatic biliary structures and clarifies the dissection plane between the gallbladder and the liver bed.
Collapse
Affiliation(s)
- Claire Graves
- Division of Pediatric Surgery, UCSF Benioff Children's Hospitals , Oakland and San Francisco, California
| | - Sora Ely
- Division of Pediatric Surgery, UCSF Benioff Children's Hospitals , Oakland and San Francisco, California
| | - Olajire Idowu
- Division of Pediatric Surgery, UCSF Benioff Children's Hospitals , Oakland and San Francisco, California
| | - Christopher Newton
- Division of Pediatric Surgery, UCSF Benioff Children's Hospitals , Oakland and San Francisco, California
| | - Sunghoon Kim
- Division of Pediatric Surgery, UCSF Benioff Children's Hospitals , Oakland and San Francisco, California
| |
Collapse
|
16
|
Miranda NT, Sequinel R, Hatanaka RR, de Oliveira JE, Flumignan DL. Ultrafast gas chromatography method with direct injection for the quantitative determination of benzene, toluene, ethylbenzene, and xylenes in commercial gasoline. J Sep Sci 2017; 40:1508-1515. [PMID: 28169493 DOI: 10.1002/jssc.201601174] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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: 10/14/2016] [Revised: 01/12/2017] [Accepted: 01/20/2017] [Indexed: 11/06/2022]
Abstract
Benzene, toluene, ethylbenzene, and xylenes are some of the most hazardous constituents found in commercial gasoline samples; therefore, these components must be monitored to avoid toxicological problems. We propose a new routine method of ultrafast gas chromatography coupled to flame ionization detection for the direct determination of benzene, toluene, ethylbenzene, and xylenes in commercial gasoline. This method is based on external standard calibration to quantify each compound, including the validation step of the study of linearity, detection and quantification limits, precision, and accuracy. The time of analysis was less than 3.2 min, with quantitative statements regarding the separation and quantification of all compounds in commercial gasoline samples. Ultrafast gas chromatography is a promising alternative method to official analytical techniques. Government laboratories could consider using this method for quality control.
Collapse
Affiliation(s)
- Nahieh Toscano Miranda
- Instituto Federal de Educação, Ciência e Tecnologia de São Paulo-IFSP-Campus Matão, Matão, São Paulo, Brasil.,Centro de Monitoramento e Pesquisa da Qualidade de Combustíveis, Biocombustíveis, Petróleo e Derivados-Cempeqc, São Paulo State University-Unesp, Araraquara, São Paulo, Brasil
| | - Rodrigo Sequinel
- Centro de Monitoramento e Pesquisa da Qualidade de Combustíveis, Biocombustíveis, Petróleo e Derivados-Cempeqc, São Paulo State University-Unesp, Araraquara, São Paulo, Brasil
| | - Rafael Rodrigues Hatanaka
- Centro de Monitoramento e Pesquisa da Qualidade de Combustíveis, Biocombustíveis, Petróleo e Derivados-Cempeqc, São Paulo State University-Unesp, Araraquara, São Paulo, Brasil
| | - José Eduardo de Oliveira
- Centro de Monitoramento e Pesquisa da Qualidade de Combustíveis, Biocombustíveis, Petróleo e Derivados-Cempeqc, São Paulo State University-Unesp, Araraquara, São Paulo, Brasil
| | - Danilo Luiz Flumignan
- Instituto Federal de Educação, Ciência e Tecnologia de São Paulo-IFSP-Campus Matão, Matão, São Paulo, Brasil.,Centro de Monitoramento e Pesquisa da Qualidade de Combustíveis, Biocombustíveis, Petróleo e Derivados-Cempeqc, São Paulo State University-Unesp, Araraquara, São Paulo, Brasil
| |
Collapse
|
17
|
Vichi S, Cortés-Francisco N, Romero A, Caixach J. Direct chemical profiling of olive (Olea europaea) fruit epicuticular waxes by direct electrospray-ultrahigh resolution mass spectrometry. J Mass Spectrom 2015; 50:558-566. [PMID: 25800192 DOI: 10.1002/jms.3562] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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: 10/31/2014] [Revised: 12/07/2014] [Accepted: 12/10/2014] [Indexed: 06/04/2023]
Abstract
In the present paper, an electrospray ionization (ESI)-Orbitrap method is proposed for the direct chemical profiling of epicuticular wax (EW) from Olea europaea fruit. It constitutes a rapid and efficient tool suitable for a wide-ranging screening of a large number of samples. In a few minutes, the method provides a comprehensive characterization of total EW extracts, based on the molecular formula of their components. Accurate mass measurements are obtained by ultrahigh resolution mass spectrometry, and compositional restrictions are set on the basis of the information available from previous studies of olive EW. By alternating positive and negative ESI modes within the same analysis, complementary results are obtained and a wide range of chemical species is covered. This provides a detailed compositional overview that otherwise would only be available by applying multiple analytical techniques.
Collapse
Affiliation(s)
- Stefania Vichi
- Food Science and Nutrition Department, XaRTA (Catalonian Reference Network on Food Technology), University of Barcelona, Food and Nutrition Torribera Campus, Av. Prat de la Riba, 171. 08921, S.ta Coloma de Gramenet, Spain
| | | | | | | |
Collapse
|