1
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El-Bahar AAA, Shendy AH, Aboalhassen AEDFA, Gomaa AM, Ismail EH. Coupling of a streamlined solid-liquid extraction protocol with LC-ESI-MS/MS for the regular oversight of illegal bromate additive use: An accurate and sensitive determination method in preliminary and bakery products. Food Chem 2024; 451:139416. [PMID: 38663249 DOI: 10.1016/j.foodchem.2024.139416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 03/24/2024] [Accepted: 04/17/2024] [Indexed: 05/26/2024]
Abstract
A reliable solid-liquid extraction protocol coupled with liquid chromatography-electrospray ionization-tandem mass spectrometry in the negative-ion mode was developed and validated for illegal bromate determination in preliminary and bakery products. Crude and dried-treated samples were directly extracted with acetonitrile-water (4:1, v/v). Bromate was determined using a Phenomenex Synergi™ Polar reversed-phase column and MS/MS under multiple reaction monitoring. The chosen solvent efficiently extracted bromate with all applied extraction-assisting techniques (p > 0.05). Although this assay avoids cleanup procedures, matrix effect of <-11% was achieved. Rapid bromate separation in only 8 min was attained by a reversed-phase column. In both commodities, linearity range, R2, recovery%, repeatability, intermediate precision, LOD and LOQ results were 0.05-100 ng mL-1, >0.9999, 88.6-103%, 2.93-9.80% and 9.64-10.10%, 0.015 μg kg-1 and 0.05 μg kg-1, respectively. Out of 288 tested real samples, 13.9% of violations were observed. This high-sensitivity protocol offers effective oversight and consumer protection.
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Affiliation(s)
- Amira A Abdulrahman El-Bahar
- Central Laboratory of Residue Analysis of Pesticides and Heavy Metals in Food, Agricultural Research Center, Ministry of Agriculture and Land Reclamation, Dokki, Giza 12311, Egypt
| | - Amr H Shendy
- Central Laboratory of Residue Analysis of Pesticides and Heavy Metals in Food, Agricultural Research Center, Ministry of Agriculture and Land Reclamation, Dokki, Giza 12311, Egypt; Central Laboratory of Residue Analysis of Pesticides and Heavy Metals in Food, Agricultural Research Center, Ministry of Agriculture and Land Reclamation, Sheikh Zayed, Ismailia 41516, Egypt.
| | - Alaa El-Dean Fathy Ahmed Aboalhassen
- Central Laboratory of Residue Analysis of Pesticides and Heavy Metals in Food, Agricultural Research Center, Ministry of Agriculture and Land Reclamation, Dokki, Giza 12311, Egypt
| | - Ahmed M Gomaa
- Central Laboratory of Residue Analysis of Pesticides and Heavy Metals in Food, Agricultural Research Center, Ministry of Agriculture and Land Reclamation, Dokki, Giza 12311, Egypt
| | - Eman H Ismail
- Chemistry Department, Faculty of Science, Ain-Shams University, Abbassia, Cairo 11566, Egypt
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2
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Liu Y, Wang X, Wei J, Fu K, Chen Y, Li L, Wang Z, Yang L. Comprehensive profiling of amino acids and derivatives in biological samples: A robust UHPLC-MS/MS method for investigating acute lung injury. J Chromatogr A 2024; 1721:464816. [PMID: 38537486 DOI: 10.1016/j.chroma.2024.464816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/10/2024] [Accepted: 03/12/2024] [Indexed: 04/13/2024]
Abstract
The severe respiratory dysfunctions associated with acute lung injury (ALI) and its sequelae have a high morbidity and mortality rate, are multifactorial, and lack a viable treatment. Considering the critical function that amino acids and derivatives play in the genesis of illnesses and the regulation of metabolic processes, monitoring the levels of metabolites associated with amino acids in biological matrices is necessary and interesting to study their pathological mechanisms. Exploring the dynamics of amino acids and derivatives level and searching for biomarkers provides improved clinical ideas for the diagnosis and treatment of ALI. Therefore, we developed an ultra-high-performance liquid chromatography-electrospray tandem mass spectrometry (UHPLC-MS/MS) method that can simultaneously determine the amino acid and derivatives metabolic levels to study amino acid profiles in different biological samples to facilitate clinical research of ALI. In this study, 48 amino acids and derivatives, including neurotransmitters, polyamines, purines, and other types, were quantified simultaneously in a fast, high-throughput, sensitive, and reliable manner within a 15-minute run time without derivatization. No relevant studies have been reported to quantify these 48 amino acid metabolites in three biological samples simultaneously. Satisfactory linearity (R > 0.995), inter-day and intra-day accuracy (85.17-112.67 % and 85.29-111.60 %, respectively), inter-day and intra-day precision (RSD < 13.80 % and RSD < 12.01 %, respectively), matrix effects (81.00 %-118.00 %), recovery (85.09 %-114.65 %) and stability (RSD < 14.72 %) were all demonstrated by the optimized method's successful validation for all analytes. In addition, the suggested method was effectively implemented in plasma, urine, and lung tissue from normal mice and mice with ALI, with the aim of finding potential biomarkers associated with ALI. Potential biomarkers were screened through multivariate statistical analysis and volcanic map analysis, and the changes of markers in ALI were again identified through heat map analysis and correlation analysis with biochemical indicators, which provided ideas and references for subsequent mechanism studies. Here, the technique created in this work offers a quick and dependable way to perform an integrated analysis of amino acids in a variety of biological materials, which can provide research ideas for understanding the physiopathological state of various diseases.
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Affiliation(s)
- Yamin Liu
- The MOE Key Laboratory of Standardization of Chinese Medicines, the SATCM Key Laboratory of New Resources and Quality Evaluation of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicine, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Xunjiang Wang
- The MOE Key Laboratory of Standardization of Chinese Medicines, the SATCM Key Laboratory of New Resources and Quality Evaluation of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicine, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Jiaojiao Wei
- The MOE Key Laboratory of Standardization of Chinese Medicines, the SATCM Key Laboratory of New Resources and Quality Evaluation of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicine, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Kangning Fu
- The MOE Key Laboratory of Standardization of Chinese Medicines, the SATCM Key Laboratory of New Resources and Quality Evaluation of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicine, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Yilin Chen
- The MOE Key Laboratory of Standardization of Chinese Medicines, the SATCM Key Laboratory of New Resources and Quality Evaluation of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicine, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Linnan Li
- The MOE Key Laboratory of Standardization of Chinese Medicines, the SATCM Key Laboratory of New Resources and Quality Evaluation of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicine, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Zhengtao Wang
- The MOE Key Laboratory of Standardization of Chinese Medicines, the SATCM Key Laboratory of New Resources and Quality Evaluation of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicine, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Li Yang
- The MOE Key Laboratory of Standardization of Chinese Medicines, the SATCM Key Laboratory of New Resources and Quality Evaluation of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicine, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
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3
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Penelope Mabunda K, Rejoice Maseko B, Ncube S. Development and application of a new QuEChERS-molecularly imprinted solid phase extraction (QuEChERS-MISPE) technique for analysis of DDT and its derivatives in vegetables. Food Chem 2024; 436:137747. [PMID: 37862985 DOI: 10.1016/j.foodchem.2023.137747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 10/07/2023] [Accepted: 10/11/2023] [Indexed: 10/22/2023]
Abstract
The current study synthesized a molecularly imprinted polymer, combined it with the QuEChERS method to form a new hybrid technique, the QuEChERS-MISPE as an alternative to the QuEChERS-dSPE for analysis of DDTs as model pesticides. Batch studies confirmed that the binding of the DDTs to the MIP cavities formed a monolayer formation through chemisorption resulting in an adsorption capacity of 429 ng g-1. A study of matrix effects indicated signal suppression for both techniques. However, the new QuEChERS-MISPE technique is less affected by matrix effects, has better sensitivity and recoveries compared to the conventional QuEChERS-dSPE technique. Application of the new QuEChERS-MISPE technique detected trace levels of DDTs in vegetables in South Africa. However, a health risk assessment indicated that potential risks for consumers was minimal. Although the risk is minimal, the detection of DDTs in vegetables in South Africa should be a concern and more constant monitoring is required.
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Affiliation(s)
- Karabo Penelope Mabunda
- Department of Chemistry, Sefako Makgatho Health Sciences University, P.O. Box 60, Medunsa, 0204, South Africa
| | - Bethusile Rejoice Maseko
- Department of Chemistry, Sefako Makgatho Health Sciences University, P.O. Box 60, Medunsa, 0204, South Africa
| | - Somandla Ncube
- Department of Chemistry, Durban University of Technology, P O Box 1334, Durban 4000, South Africa.
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4
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Fei Z, Sun M, Song Q, Li C, Liu Y. Freezing-assisted sugaring-out liquid-liquid extraction coupled with LC-MS/MS for quantitative determination of perchlorate in honey. Food Chem 2024; 435:137604. [PMID: 37783124 DOI: 10.1016/j.foodchem.2023.137604] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/10/2023] [Accepted: 09/25/2023] [Indexed: 10/04/2023]
Abstract
For the first time, a simple, quick, sensitive, and low cost method for quantification of perchlorate in honey using liquid chromatography-tandem mass spectrometry was developed. Through freezing-assisted sugaring-out liquid-liquid extraction, one-step simultaneous extraction and clean-up of perchlorate from honey were perfectly achieved. Glucose and fructose, the most abundant sugars in honey, were almost completely removed from the extract without use of any clean-up materials. Under optimum conditions, the proposed approach exhibited satisfactory linearity, negligible matrix effects, and low detection limit of 0.05 µg/kg, providing recoveries of 96.7 %-102.3 % with relative standard deviation of < 9 % for honey samples. The validated method was applied to the analysis of perchlorate in 36 honey samples, and detection rate was 94.4 %. This work provided a simple and reliable method for extensive monitoring of perchlorate in honey and opened- up new insights for analysis of contaminants in honey matrixes.
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Affiliation(s)
- Zhixin Fei
- Yunnan Center for Disease Control and Prevention, 158 Dongsi Street, Xishan District, Kunming 650022,China.
| | - Mingyue Sun
- Yunnan Center for Disease Control and Prevention, 158 Dongsi Street, Xishan District, Kunming 650022,China; College of Public Health, Dali University, Dali 671000, China
| | - Qing Song
- Yunnan Center for Disease Control and Prevention, 158 Dongsi Street, Xishan District, Kunming 650022,China
| | - Chengxi Li
- Yunnan Center for Disease Control and Prevention, 158 Dongsi Street, Xishan District, Kunming 650022,China
| | - Yang Liu
- Yunnan Center for Disease Control and Prevention, 158 Dongsi Street, Xishan District, Kunming 650022,China.
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5
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Cui K, Zhou L, Jiang C, Yang S, Zou N, Liu F, He L, Mu W. Residue behavior and efficacy of benzothiazole in grains under different fumigation conditions. PEST MANAGEMENT SCIENCE 2023; 79:3622-3630. [PMID: 37166082 DOI: 10.1002/ps.7536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 03/30/2023] [Accepted: 05/10/2023] [Indexed: 05/12/2023]
Abstract
BACKGROUND Benzothiazole is a potential grain fumigant for Tribolium castaneum. However, its safety profile and suitable fumigation conditions remain unknown. We therefore investigated the insecticidal efficacy, accumulation and dissipation of benzothiazole in grains (wheat, corn and rice) under different temperatures. RESULTS We established a universal detection method (modified QuEChERS coupled with GC-MS/MS) of benzothiazole residues in three grains, which provided high linearity (R2 > 0.999), sensitivity (limits of detection = 0.001 mg/kg, limits of quantification = 0.002-0.005 mg/kg), accuracy (recoveries = 88.18-118.75%) and precision (relative standard deviations < 4.78%). The insecticidal efficacy order of benzothiazole was 30 ≥ 10 > 20 °C and corn > wheat > rice. Temperature positively affected the accumulation/dissipation rate of benzothiazole. Rice was the most easily accumulated and dissipated grain for benzothiazole residues, while corn accumulated benzothiazole more than wheat but less than rice, with dissipation slower than wheat and rice. CONCLUSION Our results provide important references for the application of benzothiazole and other fumigants. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Kaidi Cui
- Henan Key Laboratory of Creation and Application of New Pesticides, College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Lin Zhou
- Henan Key Laboratory of Creation and Application of New Pesticides, College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Chaofan Jiang
- Henan Key Laboratory of Creation and Application of New Pesticides, College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Song Yang
- Jiangsu Product Quality Testing & Inspection Institute, Nanjing, China
| | - Nan Zou
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, China
| | - Feng Liu
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, China
| | - Leiming He
- Henan Key Laboratory of Creation and Application of New Pesticides, College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Wei Mu
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, China
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6
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Draz ME, Saad AS, El Sherbiny D, Wahba MEK. Experimentally designed potentiometric sensor for green real-time and direct assay of hazardous bromate in bakery products. Food Chem 2023; 406:135042. [PMID: 36463604 DOI: 10.1016/j.foodchem.2022.135042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 10/31/2022] [Accepted: 11/20/2022] [Indexed: 11/24/2022]
Abstract
Bakeries add extra potassium bromate to the dough to make homogeneous, elastic, fluffy bread. Bromate causes renal damage and cancer. FAO/WHO stated that bromate residues shouldn't be in baked products. A potentiometric sensor's membrane recipe was optimized for sensitive and selective bromate assay. We planned a custom experimental design of 21 sensors that included numerical and categorical factors (NPPE: PVC, matrix%, membrane thickness, and ionophore type). We defined sensor performance outcomes (Nernstian slope, quantification limit, correlation coefficient, response time and selectivity), and each sensor's outcome was determined. The computer software developed a predictive model for each outcome and the desirability function suggested the optimum sensor recipe. The sensor achieved a slope of -63.54 mV/decade and detection limit of 2 × 10-6 mol/L. The greenness profile was evaluated by the National Environmental Approach Index protocol. The developed sensor represents a reliable, fast, in-site tool for the assay of bromate in bakery products.
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Affiliation(s)
- Mohammed E Draz
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, 35712 Gamasa, Egypt.
| | - Ahmed S Saad
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, 11562 Cairo, Egypt; Medicinal Chemistry Department, PharmD Program, Egypt-Japan University of Science and Technology (E-JUST), New Borg El-Arab City, 21934 Alexandria, Egypt.
| | - Dina El Sherbiny
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, 35712 Gamasa, Egypt; Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Mary E K Wahba
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, 35712 Gamasa, Egypt; Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
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7
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Wu Y, Liang M, Xian Y, Dong H. Reply to comment on "Fragmentation pathway of hypophosphite (H 2PO 2-) in mass spectrometry and its determination in flour and flour products by LC-MS/MS". Food Chem 2022; 393:133465. [PMID: 35751222 DOI: 10.1016/j.foodchem.2022.133465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 05/18/2022] [Accepted: 06/09/2022] [Indexed: 11/04/2022]
Affiliation(s)
- Yuluan Wu
- Guangzhou Quality Supervision and Testing Institute, Guangzhou 510114, China
| | - Ming Liang
- Guangzhou Quality Supervision and Testing Institute, Guangzhou 510114, China
| | - Yanping Xian
- Guangzhou Quality Supervision and Testing Institute, Guangzhou 510114, China.
| | - Hao Dong
- College of Light Industry and Food Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China.
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8
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Chen Y, Zhu Z, Wu X, Zhang D, Tong J, Lin Y, Yin L, Li X, Zheng Q, Lu S. A nationwide investigation of perchlorate levels in staple foods from China: Implications for human exposure and risk assessment. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129629. [PMID: 36104921 DOI: 10.1016/j.jhazmat.2022.129629] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 07/14/2022] [Accepted: 07/15/2022] [Indexed: 06/15/2023]
Abstract
Perchlorate is an emerging pollutant and thyroid toxicant frequently occurred in air, water, soil and various foodstuffs. Rice and wheat flour are the most common staple foods, which could accumulate perchlorate from contaminated soils and irrigation water. However, human exposure to perchlorate via rice and wheat flour consumption has only been investigated to a limited extent. Therefore, we collected 207 rice samples and 189 wheat flour samples from 19 provinces in China to assess the level of perchlorate. The levels of perchlorate in rice and wheat flour ranged from not detected (N.D.) to 28.7 ng/g and less than limits of quantification (<LOQ) to 147 ng/g, respectively, with detection rates in both rice and wheat flour samples exceeding 60 %. The estimated daily intake (EDI) and hazard quotient (HQ) were calculated to evaluate human exposure and potential health risk of perchlorate exposure via the consumption of rice and wheat flour. The HQ values for both rice and wheat flour were less than 1, which suggested that the consumption of these staple foods may not cause potential health risks. To our knowledge, this is the first nationwide monitoring, human exposure and risk assessment of perchlorate in both rice and wheat flour in China.
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Affiliation(s)
- Yining Chen
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Zhou Zhu
- Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Xiaoling Wu
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Duo Zhang
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Jianyu Tong
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Yuli Lin
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Liuyi Yin
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Xiangyu Li
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Quanzhi Zheng
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China
| | - Shaoyou Lu
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China.
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9
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Luo D, Guan J, Dong H, Chen J, Liang M, Zhou C, Xian Y, Xu X. Simultaneous determination of twelve mycotoxins in edible oil, soy sauce and bean sauce by PRiME HLB solid phase extraction combined with HPLC-Orbitrap HRMS. Front Nutr 2022; 9:1001671. [PMID: 36245528 PMCID: PMC9555343 DOI: 10.3389/fnut.2022.1001671] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 09/09/2022] [Indexed: 11/13/2022] Open
Abstract
A solid phase extraction-high-performance liquid chromatography-tandem Orbitrap high resolution mass spectrometry (HPLC-Orbitrap HRMS) method was established for the determination of 12 mycotoxins (ochratoxin A, ochratoxin B, aflatoxin B1, aflatoxin B2, aflatoxin G1, aflatoxin G2, HT-2 toxin, sterigmatocystin, diacetoxysciroenol, penicillic acid, mycophenolic acid, and citreoviridin) in edible oil, soy sauce, and bean sauce. Samples were extracted by 80:20 (v:v) acetonitrile-water solution, purified by PRiME HLB column, separated by aQ C18 column with mobile phase consisting of 0.5 mmol/L ammonium acetate-0.1% formic acid aqueous solution and methanol. The results showed that the limits of detection (LODs) and limits of quantification (LOQs) of 12 mycotoxins were 0.12–1.2 μg/L and 0.40–4.0 μg/L, respectively. The determination coefficients of 12 mycotoxins in the range of 0.20–100 μg/L were > 0.998. The average recoveries in soy sauce and bean sauce were 78.4–106.8%, and the relative standard deviations (RSDs) were 1.2–9.7% under three levels, including LOQ, 2× LOQ and 10 × LOQ. The average recoveries in edible oil were 78.3–115.6%, and the precision RSD (n = 6) was 0.9–8.6%. A total of 24 edible oils, soy sauce and bean sauce samples were analyzed by this method. AFB1, AFB2, sterigmatocystin and mycophenolic acid were detected in several samples at concentrations ranging from 1.0 to 22.1 μg/kg. The method is simple, sensitive, and rapid and can be used for screening and quantitative analysis of mycotoxin contamination in edible oil, soy sauce, and bean sauce.
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Affiliation(s)
- Donghui Luo
- College of Food Science and Engineering, Guangdong Ocean University, Yangjiang, China
- Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory (Hanjiang Laboratory), Chaozhou, China
| | - Jingjing Guan
- College of Food Science and Engineering, Guangdong Ocean University, Yangjiang, China
| | - Hao Dong
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, College of Light Industry and Food Sciences, Ministry of Agriculture, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- *Correspondence: Hao Dong
| | - Jin Chen
- College of Food Science and Engineering, Guangdong Ocean University, Yangjiang, China
| | - Ming Liang
- Guangzhou Quality Supervision and Testing Institute, Guangzhou, China
| | - Chunxia Zhou
- College of Food Science and Engineering, Guangdong Ocean University, Yangjiang, China
| | - Yanping Xian
- Guangzhou Quality Supervision and Testing Institute, Guangzhou, China
| | - Xiaofei Xu
- College of Food Science and Engineering, Guangdong Ocean University, Yangjiang, China
- Xiaofei Xu
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10
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Frański R. Comment on "Fragmentation pathway of hypophosphite (H 2PO 2-) in mass spectrometry and its determination in flour and flour products by LC-MS/MS". Food Chem 2022; 386:132793. [PMID: 35349903 DOI: 10.1016/j.foodchem.2022.132793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 03/10/2022] [Accepted: 03/22/2022] [Indexed: 11/15/2022]
Affiliation(s)
- Rafał Frański
- Adam Mickiewicz University, Uniwersytet im Adama Mickiewicza w Poznaniu, Poznan, Poland.
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11
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Keskin B, Üzer A, Apak R. Ionic Liquid-Modified Gold Nanoparticle-Based Colorimetric Sensor for Perchlorate Detection via Anion-π Interaction. ACS OMEGA 2022; 7:28065-28075. [PMID: 35990460 PMCID: PMC9386817 DOI: 10.1021/acsomega.2c02078] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
A rapid and convenient nanoparticle(NP)-based colorimetric sensor was developed for determining the propellant oxidant, ammonium perchlorate (AP). The sensing element was manufactured by modifying gold nanoparticles (AuNPs) with [(1-methyl-1H-imidazol-2-yl)sulfanyl]acetic acid, which is an imidazolium-based ionic liquid (IL), to produce the IL@AuNP nanosensor stabilized by polyvinylpyrrolidone. The used IL is an exceptional IL which can attach to AuNPs through the sulfanyl-S atom. The sensing principle was based on observing the red shift in the surface plasmon resonance band of AuNPs leading to NP aggregation as a result of anion-π interaction of perchlorate anion with the zwitterionic form of IL@AuNPs so as to bring opposite charges face-to-face, thereby reducing the overall surface charge of NPs. The surface plasmon resonance band of AuNPs at 540 nm shifted to 700 nm as a result of aggregation. The ratiometric sensing was performed by dividing the absorbance at 700 nm to the absorbance at 540 nm and correlating this ratio to the AP concentration. The limit of detection and limit of quantification of the sensor for AP were 1.50 and 4.95 μM, respectively. Possible interferences of other energetic substances and common soil ions in synthetic mixtures were also investigated to achieve acceptable recoveries of analyte. This work may pioneer similar sensing systems where the overall anionic charges of IL-functionalized AuNPs are exceptionally reduced by an analyte anion (perchlorate), thereby forcing NPs to aggregate.
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Affiliation(s)
- Büşra Keskin
- Institute
of Graduate Studies, Istanbul University-Cerrahpaşa, Avcilar, 34320 Istanbul, Turkey
- Department
of Chemistry, Faculty of Engineering, Istanbul
University-Cerrahpaşa, Avcilar, 34320 Istanbul, Turkey
| | - Ayşem Üzer
- Department
of Chemistry, Faculty of Engineering, Istanbul
University-Cerrahpaşa, Avcilar, 34320 Istanbul, Turkey
| | - Reşat Apak
- Department
of Chemistry, Faculty of Engineering, Istanbul
University-Cerrahpaşa, Avcilar, 34320 Istanbul, Turkey
- Turkish
Academy of Sciences (TUBA), Bayraktar Neighborhood, Vedat Dalokay Street No: 112, Çankaya, 06690 Ankara, Turkey
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12
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Othman RS, Faizullah AT. On-line monitoring amplification of bromate in bottled ozonated water by flow injection analysis and spectrophotometry. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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A turn-off Eu-MOF@Fe 2+ sensor for the selective and sensitive fluorescence detection of bromate in wheat flour. Food Chem 2022; 382:132379. [PMID: 35152023 DOI: 10.1016/j.foodchem.2022.132379] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 01/07/2022] [Accepted: 02/05/2022] [Indexed: 12/29/2022]
Abstract
A new europium metal-organic framework (Eu-MOF) was prepared by simple hydrothermal method. The product exhibited intense red fluorescence, long fluorescence lifetime (0.454 ms) and excellent fluorescence stability. The fluorescence titration result showed that Fe3+ could completely quench the fluorescence of Eu-MOF, while the fluorescence quenching effect of Fe2+ or bromate was negligible. Considering the strong oxidizing property of bromate, a "turn off" Eu-MOF@Fe2+ sensor toward bromate was designed by generating Fe3+ due to the redox reaction. The results showed that the sensor displayed a wide linear range (0-0.2 mM), high sensitivity (LOD = 3.7 × 10-6 mol/L), good selectivity and resistant to possible interferences in real four sample. Furthermore, the detection mechanism was investigated by PXRD, XPS and UV-Vis methods. More importantly, the Eu-MOF@Fe2+ sensor was further applied to detect bromate in wheat flour with satisfactory recovery (95.30%-104.38%) and accuracy (RSD < 2.85%). These results suggest that Eu-MOF@Fe2+ can be used as a potential sensor to detect bromate in food industry.
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Xing J, Li Y, Zheng R, Shen H, Xu X, Mao L, Luo X, Shen J, Yao W. Simultaneous detection of multiple phenolic compounds in fish by gas chromatography-mass spectrometry following a modified QuEChERS cleanup. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2022; 39:1136-1148. [PMID: 35442851 DOI: 10.1080/19440049.2022.2062058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Phenolic compounds can cause health problems in humans through the food chain. Considering that fish play an important role in human diets, we established a rapid, simple and high-throughput method for the determination of 18 phenolic compounds in fish based on a modified QuEChERS sample preparation method combined with GC-MS. The average recovery of the 18 phenolic compounds was 81.3-116% at 3 spiked levels, and the relative standard deviations, RSDr and RSDwR, were in the range of 1.1-11.3% and 1.5-12.2%, respectively. The limit of detection was 2.0-10.1 μg/kg. Satisfactory linear relationships (R2 > 0.998) were observed for the phenolic compounds in their corresponding concentration ranges. Moreover, the established method exhibited a high sensitivity, good stability, and reliability. The development of this method has an important theoretical and practical significance for establishing standards and to control the residue levels of phenolic compounds in fish.
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Affiliation(s)
- Jiali Xing
- Ningbo Academy of Product and Food Quality Inspection (Ningbo Fibre Inspection Institute), Ningbo, China
| | - Yang Li
- College of Science, Ningbo University of Technology, Ningbo, China
| | - Ruihang Zheng
- Ningbo Academy of Product and Food Quality Inspection (Ningbo Fibre Inspection Institute), Ningbo, China
| | - Hao Shen
- School of Material Science and Chemical Engineering, Ningbo University, Ningbo, China
| | - Xiaorong Xu
- Ningbo Academy of Product and Food Quality Inspection (Ningbo Fibre Inspection Institute), Ningbo, China
| | - Lingyan Mao
- Ningbo Academy of Product and Food Quality Inspection (Ningbo Fibre Inspection Institute), Ningbo, China
| | - Xiaohu Luo
- College of Food and Pharmaceutical Science, Ningbo University, Ningbo, China
| | - Jian Shen
- Ningbo Academy of Product and Food Quality Inspection (Ningbo Fibre Inspection Institute), Ningbo, China
| | - Weirong Yao
- College of Food Science, Jiangnan University, Wuxi, China
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15
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Wu Y, Liang M, Xian Y, Wang B, Chen R, Wang L, Hu J, Hou X, Dong H. Fragmentation pathway of hypophosphite (H 2PO 2-) in mass spectrometry and its determination in flour and flour products by LC-MS/MS. Food Chem 2022; 377:132060. [PMID: 35026474 DOI: 10.1016/j.foodchem.2022.132060] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/08/2021] [Accepted: 01/03/2022] [Indexed: 11/26/2022]
Abstract
The fragmentation pathway of H2PO2- in MS was obtained by Orbitrap HRMS and the reverse confirmation was carried out by the neutral loss detection experiment. The results showed that H2PO2- with even electron ion would produce the neutral loss of 2H and form a new even electron ion with a pair of lone-pair electrons. Based on this, a LC-MS/MS method was developed for the determination of H2PO2- in flour and flour products. The H2PO2- was separated on an Acclaim Trinity P1 composite ion exchange column, and then detected by MS/MS under MRM mode. Finally, the developed method was validated in terms of the linearity, selectivity, accuracy, precision and matrix effect. The method showed a good linearity (R2>0.999) in the concentration range of 50 ∼ 1500 μg/L. The LOD and LOQ for H2PO2- were 10.0 mg/kg and 30.0 mg/kg, respectively. The average recoveries and RSDs (n = 6) were 93.0%∼102.9% and 2.6 ∼ 5.6%, respectively.
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Affiliation(s)
- Yuluan Wu
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
| | - Ming Liang
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
| | - Yanping Xian
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China.
| | - Bin Wang
- Guangzhou Hexin Instrument Co. Ltd, Guangzhou 510700, China
| | - Rongqiao Chen
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
| | - Li Wang
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
| | - Junpeng Hu
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
| | - Xiangchang Hou
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
| | - Hao Dong
- College of Light Industry and Food Sciences, Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
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16
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Determination of 19 chlorophenols in fish by QuEChERS-gas chromatography-mass spectrometry. Se Pu 2022; 40:477-487. [PMID: 35478007 PMCID: PMC9404033 DOI: 10.3724/sp.j.1123.2021.12002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
大量含氯农药、次氯酸消毒水以及水产品杀虫剂和杀菌剂的广泛使用,使鱼类容易受到氯酚类化合物的污染,因而建立鱼肉中氯酚类化合物的检测方法十分重要。建立了QuEChERS结合气相色谱-质谱法同时检测鱼肉中19种氯酚类化合物的分析方法。19种氯酚类化合物选用DB-5MS毛细管色谱柱(30 m×0.25 mm×0.25 μm),载气流速1 mL/min进行分离,可以得到很好的峰形。前处理采用改良的QuEChERS方法,通过对提取剂的种类和剂量、净化剂的种类和剂量,以及衍生条件中的衍生温度、衍生时间和衍生剂用量等进行优化,确定最优的前处理方法。选择10 mL乙酸乙酯作为提取剂,500 mg的C18作为净化剂,加入3 g氯化钠和5 g无水硫酸镁,过0.22 μm的有机滤膜,加入50 μL的硅烷化衍生剂在45 ℃条件下衍生30 min,用EI源测定,选择离子监测模式,以外标法定量。19种氯酚类化合物在0.4~10 μg/L范围内具有良好的线性关系,相关系数R2大于0.998,方法定量限为0.04~0.16 μg/kg。空白基质不同加标水平的回收率为70.6%~115.0%,相对标准偏差为2.6%~10.5%。将建立的方法应用于实际样品的检测分析,结果显示,各种鱼肉中均有不同程度的氯酚类化合物检出,其中,黄花鱼检出的氯酚类化合物总量最大,为8.74 μg/kg;其次为鲫鱼7.59 μg/kg;米鱼的检出量最少,为1.59 μg/kg。所建立的方法简化了样品的前处理步骤,操作简单,方法灵敏度高、重复性好,可满足鱼肉中19种氯酚类化合物的高通量检测要求,能显著提高氯酚类化合物的检测效率。
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Guo Q, Pan L, Qin Y, Xie F, Wang X, Zhao X, Chen L, Wang B, Cai J, Liu H. Combined use of analyte protectants and precolumn backflushing for a robust, high-throughput quantitative determination of aroma compounds in cigarette mainstream smoke by gas chromatography-tandem mass spectrometry. Microchem J 2022. [DOI: 10.1016/j.microc.2021.107121] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Hu J, Xian Y, Wu Y, Chen R, Dong H, Hou X, Liang M, Wang B, Wang L. Perchlorate occurrence in foodstuffs and water: Analytical methods and techniques for removal from water - A review. Food Chem 2021; 360:130146. [PMID: 34034057 DOI: 10.1016/j.foodchem.2021.130146] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 05/12/2021] [Accepted: 05/16/2021] [Indexed: 11/15/2022]
Abstract
Perchlorate (ClO4-), a type of contaminant with high diffusivity and durability, has been widely detected in water and foodstuffs, arousing a global concern. It can interfere with normal function of the human thyroid gland, affecting human health. Therefore, determination of perchlorate in water and foodstuffs, and removal from water are important. This review focuses on the occurrence of perchlorate, mainly in water and foodstuffs, and provides an overview of analytical methods for determination of perchlorate over the last two decades. In addition, merits and drawbacks of the various methods have been considered. This review also highlights the most commonly used approaches for removal of perchlorate from water. Finally, current trends and future perspectives in determination of perchlorate and removal from water are proposed. This review provided a comprehensive understanding of perchlorate occurrence and its removal from water, and had practical significance in reducing the harm of perchlorate to human.
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Affiliation(s)
- Junpeng Hu
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
| | - Yanping Xian
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
| | - Yuluan Wu
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
| | - Rongqiao Chen
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
| | - Hao Dong
- College of Light Industry and Food Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China; Academy of Contemporary Agricultural Engineering Innovations, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Xiangchang Hou
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
| | - Ming Liang
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
| | - Bin Wang
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
| | - Li Wang
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
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19
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Determining Potassium Bromate in the Inhalable Aerosol Fraction in Workplace Air with Ion Chromatography. Saf Health Work 2020; 12:209-216. [PMID: 34178398 PMCID: PMC8209406 DOI: 10.1016/j.shaw.2020.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 07/11/2020] [Accepted: 12/13/2020] [Indexed: 11/24/2022] Open
Abstract
Background The article presents the results of studies performed in order to develop a new method of airborne potassium bromate(V) determination at workplaces. Methods The method is based on a collection of the inhalable fraction of potassium bromate(V) using the IOM Sampler, then extraction of bromates with deionized water and chromatographic analysis of the obtained solution. The analysis was performed using ion chromatography with conductometric detection. The tests were performed on a Dionex IonPac®AS22 analytic column (250 × 4 mm, 6 μm) with AG22 precolumn (50 × 4 mm 11 μm). Results The method provides for potassium bromate(V) determination within the concentration range of 0.043 ÷ 0.88 mg/m3 for an air sample of 0.72 m3 in volume, i.e., 0.1–2 times the exposure limit value as proposed in Poland. The method was validated in accordance with PN-EN 482. The obtained validation data are as follows: measuring range: 3.1–63.4 μg/mL, limit of detection (LOD) = 0.018 μg/mL and limit of quantification (LOQ) = 0.053 μg/mL. The developed method has been tested in the work environment, on laboratory employees having contact with potassium bromate(V). Conclusion The analytical method allowed the determination of the inhalable fraction of airborne potassium bromate(V) at workplaces and can be used to assess occupational exposure.
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Umarbek Alimov, Zhao K, Guo Y, Meng L, Deng T. Volumetric Properties and Ion Interactions for Sodium Hypophosphite Aqueous Solution from 283.15 to 363.15 K at 101.325 kPa. RUSS J INORG CHEM+ 2020. [DOI: 10.1134/s0036023620120025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Determination of bongkrekic acid and isobongkrekic acid in rice noodles by HPLC-Orbitrap HRMS technology using magnetic halloysite nanotubes. Food Chem 2020; 344:128682. [PMID: 33246684 DOI: 10.1016/j.foodchem.2020.128682] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 11/13/2020] [Accepted: 11/16/2020] [Indexed: 01/06/2023]
Abstract
The existing extraction and detection methods of bongkrekic acid (BKA) and isobongkrekic acid (IBKA) are complex, time-consuming and solvent-consuming. In this work, a simple and fast pre-concentration procedure based on Fe3O4/HNTs was developed for the determination of BKA and IBKA in rice noodles using HPLC-Orbitrap HRMS. The structure and morphology of Fe3O4/HNTs was characterized by means of XRD, SEM, FT-IR and VSM. Parameters affecting the extraction efficiency including adsorbent amount, pH, extraction time, type and volume of eluent were investigated by employing the response surface method. Results indicated that the proposed method had favorable linearity in the concentration range of 2-200 μg/L with a correlation coefficient >0.998. Method LOD and LOQ were 0.3 μg/kg and 1.0 μg/kg, respectively. Finally, the method was successfully applied to determine BKA and IBKA in rice noodle samples from southern China with recoveries ranging from 79.8% to 102.6% and relative standard deviation (RSD) of 4.2%-7.1%.
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22
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A highly-efficient and cost-effective pretreatment method for selective extraction and detection of perchlorate in tea and dairy products. Food Chem 2020; 328:127113. [DOI: 10.1016/j.foodchem.2020.127113] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 05/19/2020] [Accepted: 05/20/2020] [Indexed: 12/15/2022]
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Wang C, Chen H, Zhu L, Liu X, Lu C. Accurate, sensitive and rapid determination of perchlorate in tea by hydrophilic interaction chromatography-tandem mass spectrometry. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:3592-3599. [PMID: 32701081 DOI: 10.1039/d0ay00811g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Perchlorate is an environmental contaminant interrupting thyroid hormone production, and perchlorate in tea has raised wide concern recently. In this study, an accurate method was developed for the determination of perchlorate in tea using hydrophilic interaction chromatography-tandem mass spectrometry and a simplified QuEChERS procedure. The method utilized a zwitterion HILIC column for separation, and the optimal gradient eluents consisted of acetonitrile and aqueous solution with 0.1% formic acid and 20 mmol L-1 ammonium formate. Calibration curves were fitted by the quadratic model with 1/x weight instead of the linear model. As perchlorate was only partially extractable when using acetonitrile or methanol as the extraction solvent, acetonitrile/water (1 : 1, v/v) was chosen to extract perchlorate from tea samples. Graphitized carbon black was used as the dispersive solid phase extraction sorbent to clean up tea extracts. The method exhibited satisfactory accuracy with recoveries of 81.4-100.9% and relative standard deviations of 1.3-14.5% for green and black teas. The limit of quantitation was 0.005 mg kg-1, while the limits of detection were 0.0011 mg kg-1 for green tea and 0.0013 mg kg-1 for black tea, indicating an excellent sensitivity of this method. A 100% positive rate of perchlorate was found in 100 real tea samples, and the concentrations ranged from 0.0030 mg kg-1 to 0.78 mg kg-1. This accurate, sensitive and rapid method would be suitable for monitoring, risk assessment and source identification of perchlorate in tea.
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Affiliation(s)
- Chen Wang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 310008, China.
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24
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Quantitative analysis of fourteen heterocyclic aromatic amines in bakery products by a modified QuEChERS method coupled to ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). Food Chem 2019; 298:125048. [DOI: 10.1016/j.foodchem.2019.125048] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 05/05/2019] [Accepted: 06/18/2019] [Indexed: 11/23/2022]
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25
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Investigation of 8 exogenous medicines illegally added into Guangdong herbal teas by solid phase extraction and ultrahigh performance liquid chromatography-tandem mass spectrometry. Microchem J 2019. [DOI: 10.1016/j.microc.2019.04.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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26
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Liu Y, Sun H, Zhou L, Luo F, Zhang X, Chen Z. Quantitative determination and contamination pattern of perchlorate in tea by ultra performance liquid chromatography and tandem mass spectrometry. Food Chem 2019; 274:180-186. [DOI: 10.1016/j.foodchem.2018.07.113] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 07/13/2018] [Accepted: 07/17/2018] [Indexed: 11/25/2022]
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27
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Xian Y, Wu Y, Dong H, Chen L, Zhang C, Hou X, Zeng X, Bai W, Guo X. Modified QuEChERS purification and Fe 3O 4 nanoparticle decoloration for robust analysis of 14 heterocyclic aromatic amines and acrylamide in coffee products using UHPLC-MS/MS. Food Chem 2019; 285:77-85. [PMID: 30797378 DOI: 10.1016/j.foodchem.2019.01.132] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 01/17/2019] [Accepted: 01/20/2019] [Indexed: 01/08/2023]
Abstract
Based on QuEChERS dispersed purification, Fe3O4 nanoparticle decoloration and UHPLC-MS/MS, a robust and sensitive method was established for simultaneous analysis of 14 heterocyclic aromatic amines (HAAs) and acrylamide (AA) in coffee products. Sample was extracted by 90% acetonitrile water (v/v), dispersed with primary secondary amine (PSA) and further purified with Fe3O4 nanoparticle. Then, 15 analytes were detected using ESI positive ion under MRM mode. Good linearity was observed for all analytes in the range of 0.2-100 μg/L with the determination coefficients being above 0.996. Limits of detection (S/N ≥ 3) and limits of quantification (S/N ≥ 10) were in the range of 0.02-0.15 µg/L and 0.2-0.7 µg/L, respectively. The intra-day average recoveries were between 81.6% and 100%, and the intra-day precisions ranged from 4.3% to 9.0%. The inter-day average recoveries were in the range of 81.0-101% with precisions ranging from 5.0% to 7.8%. Results indicated that the combination of PSA and Fe3O4 exhibited superior purification and adsorption effects for removing pigments and acid compounds. Real samples analysis indicated that coffee products were widely contaminated with AA, harman and norharman.
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Affiliation(s)
- Yanping Xian
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
| | - Yuluan Wu
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
| | - Hao Dong
- College of Light Industry and Food Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China.
| | - Liwei Chen
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
| | - Chi Zhang
- Nanjing Institute of Product Quality Inspection, Nanjing 210019, China
| | - Xiangchang Hou
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
| | - Xiaofang Zeng
- College of Light Industry and Food Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Weidong Bai
- College of Light Industry and Food Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Xindong Guo
- Guangzhou Quality Supervision and Testing Institute, Research Center of Risk Dynamic Detection and Early Warning for Food Safety of Guangzhou City, Key Laboratory of Detection Technology for Food Safety of Guangzhou City, Guangzhou 511447, China
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28
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Dong H, Xiao K, Xian Y, Wu Y, Zhu L. A novel approach for simultaneous analysis of perchlorate (ClO4−) and bromate (BrO3−) in fruits and vegetables using modified QuEChERS combined with ultrahigh performance liquid chromatography-tandem mass spectrometry. Food Chem 2019; 270:196-203. [DOI: 10.1016/j.foodchem.2018.07.091] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 07/10/2018] [Accepted: 07/16/2018] [Indexed: 11/25/2022]
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29
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Development and comparison of single-step solid phase extraction and QuEChERS clean-up for the analysis of 7 mycotoxins in fruits and vegetables during storage by UHPLC-MS/MS. Food Chem 2018; 274:471-479. [PMID: 30372967 DOI: 10.1016/j.foodchem.2018.09.035] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 09/03/2018] [Accepted: 09/04/2018] [Indexed: 01/16/2023]
Abstract
A robust and sensitive UHPLC-MS/MS method was developed for the analysis of seven mycotoxins in fruits and vegetables. The variations of seven mycotoxins concentrations during storage were also determined for the first time. Solid phase extraction (SPE) and QuEChERS clean-up were compared, and extraction was finally performed with acetonitrile under acidic conditions followed by HLB SPE purification. Seven mycotoxins were separated on a C18 column by gradient elution, scanned by ESI+ and ESI- dynamic switching and detected with MRM mode. LOD and LOQ, matrix effect, accuracy and precision of the developed method were investigated. Results were linear in their concentration ranges for all mycotoxins with R2 being greater than 0.999. LODs and LOQs were ranged from 0.05 to 3.0 μg/kg and 0.2 to 10.0 μg/kg, respectively. Average recoveries were between 81.1% and 116% with intraday- and interday-precision being in the ranges of 3.0-6.2% and 4.2-6.1%, respectively. The validated method provides sufficient selectivity, sensitivity and accuracy to screen for seven mycotoxins at trace levels, without using standard addition or matrix-matched calibration to compensate for matrix effects. The method was successfully applied for mycotoxins analysis in fruits and vegetables. None were detected in fresh samples, but AOH and AME were detected in strawberry, and TeA was detected in tomato fruits during long-term storage. Their concentrations were in the range of 3.6-165.3 μg/kg from 3 days to 60 days and significantly increased along with storage time.
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Zhang X, Xian Y, Li H, Huang BX, Liang M, Chen J. Rapid determination of hexavalent chromium in textiles by a novel ammonium pyrrolidine dithiocarbamate derivatization combined with UHPLC-MS/MS. J Sep Sci 2018; 41:3583-3589. [PMID: 30048047 DOI: 10.1002/jssc.201800563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 07/16/2018] [Accepted: 07/21/2018] [Indexed: 11/11/2022]
Abstract
Hexavalent chromium is mainly determined by traditional spectrophotometry, atomic absorption spectrometry, and ion chromatography methods. In the present work, a reliable ultra high performance liquid chromatography with tandem mass spectrometry method was firstly developed for the determination of hexavalent chromium in textiles. The sample was extracted by acetic acid/sodium acetate buffer solution and followed by derivatization with ammonium pyrrolidine dithiocarbamate. The resulting derivative product was extracted by ethyl acetate, separated on a C18 column, and detected through electrospray ionization source in the positive mode with multiple reaction monitoring conditions. The derivatization reaction conditions were investigated and optimized. The developed method was validated in terms of the sensitivity, linearity range, matrix effects, recovery, accuracy, intra- and interday precision. Results showed that the calibration curves of pure solvent and matrix were linear over the selected concentration ranges of 0.1-20.0 μg/L. The achieved instrument and method limit of quantification were 0.1 and 40.0 μg/kg, respectively. Recoveries were calculated at three spiked concentrations and the values were between 92.2 and 103% with relative standard deviation values of 2.7-4.9% for intra-day precision and 6.1% for inter-day precision. Successful analysis of hexavalent chromium in practical textiles indicated that there was hexavalent chromium contamination in textiles.
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Affiliation(s)
- Xiaoli Zhang
- Guangdong Inspection and Quarantine Technology Center, Guangzhou, China
| | - Yanping Xian
- Guangzhou Quality Supervision and Testing Institute, Guangzhou, China
| | - Hui Li
- Guangdong Inspection and Quarantine Technology Center, Guangzhou, China
| | - Bo-Xi Huang
- Guangdong Inspection and Quarantine Technology Center, Guangzhou, China
| | - Ming Liang
- Guangzhou Quality Supervision and Testing Institute, Guangzhou, China
| | - Jiefeng Chen
- Guangzhou Quality Supervision and Testing Institute, Guangzhou, China
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Dong H, Zeng X, Bai W. Solid phase extraction with high polarity Carb/PSA as composite fillers prior to UPLC-MS/MS to determine six bisphenols and alkylphenols in trace level hotpot seasoning. Food Chem 2018; 258:206-213. [PMID: 29655724 DOI: 10.1016/j.foodchem.2018.03.074] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Revised: 03/04/2018] [Accepted: 03/17/2018] [Indexed: 10/17/2022]
Abstract
The present study reports an ultra high-performance liquid chromatography tandem mass spectrometry method for the simultaneous determination of six bisphenols (bisphenol A, bisphenol B and bisphenol F) and alkylphenols (4-nonylphenol, 4-n-nonylphenol and octylphenol) in hotpot seasoning. Samples were dispersed in n-hexane after addition of internal standards bisphenol A-d4 and 4-n-nonylphenol-d4. Sample solutions were then centrifuged, and the supernatants purified using solid phase extraction with high polarity Carb/PSA composite fillers. Six target analytes were separated on a Waters ACQUITY BEH C18 column by gradient elution with methanol and 0.05% ammonium hydroxide in water as the mobile phase, and determined under multiple reactions monitoring mode. The limits of detection and quantitation, matrix effect, recovery and precision of the method were investigated. Results were linear in the concentration range 0.1-250 µg/L for all compounds of interest, with R2 > 0.9950. Limits of detection were in the range 0.1-0.4 μg/kg, and limits of quantitation were between 0.5 μg/kg and 1.0 μg/kg. The mean recoveries for negative samples at three spiked concentrations were in the range 87.9%-102.4%, and the intra-day precision and inter-day precision were in the ranges 2.1-8.2% and 4.8-11.2%, respectively. This method is accurate and sensitive, and had good clean-up characteristics, which might apply to screening and quantitation of target bisphenols and alkylphenols in hotpot seasoning.
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Affiliation(s)
- Hao Dong
- College of Light Industry and Food Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong 510225, China; School of Food Science and Technology, South China University of Technology, Guangzhou 510640, China
| | - Xiaofang Zeng
- College of Light Industry and Food Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong 510225, China.
| | - Weidong Bai
- College of Light Industry and Food Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong 510225, China.
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