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Chen G, Lai B. Matrix overcompensation calibration: A new strategy to correct matrix effects of carbon origin in multielement analysis by inductively coupled plasma mass spectrometry. Anal Chim Acta 2024; 1309:342675. [PMID: 38772665 DOI: 10.1016/j.aca.2024.342675] [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: 10/25/2023] [Revised: 04/11/2024] [Accepted: 05/02/2024] [Indexed: 05/23/2024]
Abstract
BACKGROUND Elemental analysis by inductively coupled plasma mass spectrometry (ICP-MS) may suffer from matrix effects; those caused by organic matrices cannot be corrected by internal standardization. A new strategy, matrix overcompensation calibration (MOC), was developed to correct such matrix effects. RESULTS Clear fruit juices were diluted 1:50 in 1 % HNO3 (v/v)- 0.5 % HCl (v/v)- 5 % ethanol (v/v). A standard series was treated likewise to construct an external calibration curve. As, Se, Cd, and Pb in juices were determined by dilute-and-shoot ICP-MS based on this MOC strategy. The results agreed with those obtained by standard addition calibration and microwave-aided digestion; data accuracy was validated by spike-recovery studies. SIGNIFICANCE Unlike standard addition calibration, a single external calibration curve established by MOC can be applicable to juices of diversified fruit, geographical, and manufacturer origins enhancing productivity.
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Affiliation(s)
- Guoying Chen
- U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 E. Mermaid Lane, Wyndmoor, Pennsylvania, 19038, USA.
| | - Bunhong Lai
- U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 E. Mermaid Lane, Wyndmoor, Pennsylvania, 19038, USA
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Mehri F, Heshmati A, Ghane ET, Mahmudiono T, Fakhri Y. Concentration of Heavy Metals in Traditional and Industrial Fruit Juices from Iran: Probabilistic Risk Assessment Study. Biol Trace Elem Res 2024:10.1007/s12011-023-04049-5. [PMID: 38191759 DOI: 10.1007/s12011-023-04049-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 12/27/2023] [Indexed: 01/10/2024]
Abstract
Exposure to heavy metals can endanger the health of exposed people in the long term. The consumption of fruit juice is increasing; it is important to estimate the health risk of consumers due to heavy metals. The current study was carried out for the analysis of toxic metals (lead (Pb), arsenic (As), and cadmium (Cd)) and essential elements (copper (Cu) and zinc (Zn)) in 60 samples of traditional and industrial fruit juices (10 samples of different brands of apple, orange, grape, peach, mango, and pineapple) in Hamadan, West Iran, using inductivity coupled plasma optical emission spectrometry (ICP-OES) method. The validation protocol included precision of the analytical method; recovery, the determination of the limit of detection (LOD), the limit of quantification (LOQ), and linearity were measured. Moreover, risk assessment was detected using target hazard quotient (THQ) and cancer risk (CR) by the Monte Carlo simulation (MCS) model. The ranking of metal concentration in traditional and industrial fruit juices was Zn > Cu > As > Pb > Cd. In all samples, concentrations of heavy metals in industrial fruit juices were higher than traditional fruit juices p < < 0.001. The level of metals in all samples was lower of the US Environmental Protection Agency (USEPA), the World Health Organization (WHO), and the Iran Standard (IS) permissible limit set for drinking water. In terms of non-carcinogenic, values of toxic elements for children and adult in traditional and industrial fruit juices were 1.6E-3 and 1.72E-3 and 2.6E-3 and 1.85E-3, respectively. The 95th percentile of CR in adults and children due to both industrial and traditional fruits juices was higher than 1E-6; hence, reducing the concentration of As in fruit juices should be conducted. Consumption of fruit juice can increase carcinogenic risk of consumers. Therefore, it is recommended to consume it with caution.
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Affiliation(s)
- Fereshteh Mehri
- Nutrition Health Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Ali Heshmati
- Nutrition Health Research Center, Hamadan University of Medical Sciences, Hamadan, Iran.
| | - Elaheh Talebi Ghane
- Modeling of Noncommunicable Diseases Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Trias Mahmudiono
- Department of Nutrition, Faculty of Public Health, Universitas Airlangga, Jl. Mulyorejo Kampus C, Surabaya, 60115, Indonesia
| | - Yadolah Fakhri
- Food Health Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
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Chen G, Lai B. Dilute-and-shoot ICPMS quantification of V, Ni, Co, Cu, Zn, As, Se, Ag, Cd, Ba, and Pb in fruit juices based on matrix overcompensation calibration. Anal Bioanal Chem 2024; 416:839-847. [PMID: 38059990 DOI: 10.1007/s00216-023-05071-1] [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: 09/07/2023] [Revised: 10/30/2023] [Accepted: 11/24/2023] [Indexed: 12/08/2023]
Abstract
Analysis of V, Co, Ni, Cu, Zn, As, Se, Ag, Cd, Ba, and Pb in fruit juices was performed by inductively coupled plasma mass spectrometry (ICPMS) after simple 50-fold dilution in 1% (v/v) HNO3-0.5% (v/v) HCl-5% (v/v) ethanol. Ethanol was added to overwhelm native organic components and dominate matrix effects. A universal calibration curve was built based on a likewise treated reagent standard series. This new matrix overcompensation calibration (MOC) strategy was developed to effectively compensated for matrix effects of carbon origin and achieved quantitative (92.5-118.8%) recoveries comparable to those by standard addition calibration (92.1-117.8%) and microwave-aided digestion (99.3-116.8%). The LODs were 0.528, 0.204, 0.195, and 2.07 ng mL-1 for toxic elements As, Cd, Pb, and Ni, respectively, adequate for their regulatory monitoring. Ge, Rh, Tb, and Ir were used as internal standards. MOC renders a calibration curve universally applicable to any clear fruit juices of diversified crop, geographic, and manufacturer origins resulting in cost saving and enhanced productivity.
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Affiliation(s)
- Guoying Chen
- U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 E. Mermaid Lane, Wyndmoor, PA, 19038, USA.
| | - Bunhong Lai
- U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 E. Mermaid Lane, Wyndmoor, PA, 19038, USA.
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Schuler L, Zust D, Dahm G, Clabots F. Nickel in foodstuffs available on the Luxembourgish market and dietary intake. FOOD ADDITIVES & CONTAMINANTS. PART B, SURVEILLANCE 2023; 16:350-360. [PMID: 37691281 DOI: 10.1080/19393210.2023.2249434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 08/15/2023] [Indexed: 09/12/2023]
Abstract
Nickel is a food contaminant of natural or anthropogenic origin. Monitoring of contaminants in food in general allows obtaining an overview on the presence of substances that are undesirable to health. The aim of this study was to analyse nickel content in food of non-animal origin and beverages sold in Luxembourg to determine the exposure of the population to this contaminant. In total, 660 samples were analysed in the timeframe from 2017 to 2021. The results demonstrate high concentrations of nickel in cashew nuts, walnuts, hemp and sunflower seeds, dried peas, oregano, and cocoa powder. Surveillance of contaminants in food allows identifying contributors to the chronic and acute exposure of nickel in order to potentially set official maximum levels in European legislation in the future, allowing for better enforcement actions in case of contaminated products and increasing consumer protection.
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Affiliation(s)
- Luc Schuler
- Ministry of Agriculture, Viticulture and Rural Development, Luxembourg Veterinary and Food Administration, Strassen, Grand Duchy of Luxembourg
| | - Danny Zust
- Ministry of Agriculture, Viticulture and Rural Development, Luxembourg Veterinary and Food Administration, Strassen, Grand Duchy of Luxembourg
| | - Georges Dahm
- Laboratoire National de Sante, Department of Forensic Medecine, Dudelange, Grand Duchy of Luxembourg
| | - Fabienne Clabots
- Ministry of Agriculture, Viticulture and Rural Development, Luxembourg Veterinary and Food Administration, Strassen, Grand Duchy of Luxembourg
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Singh N, Sharma R, Dubey A, Awasthi O, Saha S, Bharadwaj C, Sharma V, Sevanthi AM, Kumar A, Deepak. Citrus improvement for enhancedmineral nutrients in fruit juice through interspecific hybridization. J Food Compost Anal 2023. [DOI: 10.1016/j.jfca.2023.105259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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6
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Lima EA, Cunha FA, Oliveira MJ, Lyra WS, Junior MM, Santos JC, Ferreira SL, Araujo MC, Almeida LF. Fast automated method for the direct determination of total antimony in grape juice samples by hydride generation and atomic fluorescence spectrometric detection without external pretreatment. Food Chem 2022; 381:132194. [DOI: 10.1016/j.foodchem.2022.132194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 12/30/2021] [Accepted: 01/16/2022] [Indexed: 12/26/2022]
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7
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Gravitational assisted three-stage block freeze concentration process for producing enriched concentrated orange juice (Citrus sinensis L.): Multi-elemental profiling and polyphenolic bioactives. J FOOD ENG 2022. [DOI: 10.1016/j.jfoodeng.2021.110802] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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Hammo MM, Akar T, Sayin F, Celik S, Akar ST. Efficacy of green waste-derived biochar for lead removal from aqueous systems: Characterization, equilibrium, kinetic and application. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 289:112490. [PMID: 33819651 DOI: 10.1016/j.jenvman.2021.112490] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/23/2021] [Accepted: 03/24/2021] [Indexed: 06/12/2023]
Abstract
The removal of toxic metals from the aquatic ecosystem is one of the most pressing environmental and public health concerns today. A strong potential has recently emerged for the removal of such metals using biochar sorbents. Biosorption technology could make a significant difference in the future. It is a viable and cost-effective alternative to the remediation of toxic pollutants utilizing various biomaterials. In the current study, batch and fixed-bed studies were performed to evaluate the performance of Capsicum annuum L. seeds biochar (CASB) as an alternative material in removing toxic Pb(II) from aqueous solutions. Removal characteristics were investigated by considering the equilibrium and kinetic aspects. Biosorption equilibrium was established within 40 min. The optimum dosage of CASB for Pb(II) removal was determined as 2.0 g L-1. Biosorption data were well predicted by a non-linear Langmuir isotherm model. Monolayer biosorption occurred for CASB with a maximum capacity of 36.43 mg g-1. Biosorption kinetics fitted well with a pseudo-first-order kinetic model. The external mass transfer may control Pb(II) transport mechanism. Dynamic flow mode biosorption and regeneration potential of CASB were also examined. The application of CASB exhibited a 100% removal yield in real apple juice samples spiked with low concentrations of Pb(II). Exhausted points for the CASB packed columns were recorded as 195 and 320 min for simulated wastewater (SW) and synthetic Pb(II) solution, respectively. FTIR, BET, SEM-EDX analysis, and zeta potential measurements were used for the characterization of biochar and assessment of the metal ion-biosorbent interaction mechanism. Finally, our study provides a practical approach for the uptake of Pb(II) ions from contaminated solutions.
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Affiliation(s)
- Mahmoud M Hammo
- Eskisehir Osmangazi University, Graduate School of Natural and Applied Sciences, Department of Chemistry, 26040, Eskisehir, Turkey
| | - Tamer Akar
- Eskisehir Osmangazi University, Faculty of Science and Letters, Department of Chemistry, TR-26040, Eskisehir, Turkey.
| | - Fatih Sayin
- Eskisehir Osmangazi University, Faculty of Science and Letters, Department of Chemistry, TR-26040, Eskisehir, Turkey
| | - Sema Celik
- Eskisehir Osmangazi University, Faculty of Science and Letters, Department of Chemistry, TR-26040, Eskisehir, Turkey
| | - Sibel Tunali Akar
- Eskisehir Osmangazi University, Faculty of Science and Letters, Department of Chemistry, TR-26040, Eskisehir, Turkey
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Ling S, Zhao Q, Iqbal MN, Dong M, Li X, Lin M, Wang R, Lei F, He C, Wang S. Development of immunoassay methods based on monoclonal antibody and its application in the determination of cadmium ion. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:124992. [PMID: 33454572 DOI: 10.1016/j.jhazmat.2020.124992] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/14/2020] [Accepted: 12/27/2020] [Indexed: 05/24/2023]
Abstract
Owing to the threat of cadmium (Cd2+) to public health, it is an urgent demand to develop effective, sensitive, and rapid methods for the detection of cadmium. In this study, indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) and immunochromatographic test strips (ICTS) were established for the determination of Cd2+ based on the obtained mAb with high specificity and high affinity (Kaff = 3.0 × 109 L/moL). The linear range of ic-ELISA detection was 0.03-1.11 ng/mL and 50% inhibitive concentration (IC50) of cadmium ion was determined to be 0.15 ng/mL. The visual limit of detection (vLOD) of the AuNS-based strip was 0.375 ng/mL. The vLOD of AuNF-based strip using higher intensity reporter determined to be 0.03 ng/mL, which was enhanced 12 times compared to the traditional strip. In summary, the developed immunoassays based on mAb shows great potential for monitoring the cadmium ion in environmental samples.
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Affiliation(s)
- Sumei Ling
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Qiang Zhao
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Muhammad Naeem Iqbal
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Mingke Dong
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiulan Li
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Ming Lin
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Rongzhi Wang
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Feiya Lei
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Caizhen He
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Shihua Wang
- The Ministry of Education Key Laboratory of Biopesticide and Chemical Biology, Fujian Key Laboratory of Pathogenic Fungi and Mycotoxins, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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Rocha PSM, Cruz GFB, Cassella RJ. Evaluation of Copper and Manganese Concentrations in Commercial Fruit Juices and Nectars Consumed in Brazil by GF AAS. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2020; 2020:8816068. [PMID: 33123407 PMCID: PMC7585672 DOI: 10.1155/2020/8816068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 09/29/2020] [Indexed: 06/11/2023]
Abstract
The present work proposes a simple method for direct determination of Cu and Mn in commercial fruit juices and nectars by graphite furnace atomic absorption spectrometry (GF AAS). We analyzed samples of different flavors (orange, mango, passion fruit, peach, and grape) and brands of Brazilian commercial fruit juices and nectars. We also carried out a study to define a suitable temperature program and to optimize the calibration conditions. It was possible to determine Cu and Mn in the samples just after a simple dilution of samples with a 0.70 mol L-1 HNO3 solution, except in the case of grape juice. We compared the results obtained with the proposed method to those obtained after a traditional treatment based on acid digestion in a microwave oven, and no significant differences were observed (except for grape juice). The accuracy of the method was assessed through a recovery test, which provided recovery percentages in the range of 81-117%. Precision was always better than 8%, and the limits of quantification for Cu and Mn were 6 μg L-1 and 9 μg L-1, respectively. We analyzed twenty-two samples, and the concentrations of Cu and Mn were in the range of 24.1-321 μg L-1 and 116-3296 μg L-1, respectively. Statistical analysis using a two-way analysis of variance (ANOVA) at 95% confidence level showed that flavor and brand impacted on the concentration of the analytes in the samples. Among the samples analyzed, the grape juice presented the highest concentrations of both Cu and Mn.
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Affiliation(s)
- Pamela S. M. Rocha
- Departamento de Química Analítica, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói, RJ 24020-141, Brazil
| | - Graziela F. B. Cruz
- Departamento de Química Analítica, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói, RJ 24020-141, Brazil
| | - Ricardo J. Cassella
- Departamento de Química Analítica, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói, RJ 24020-141, Brazil
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A revisited FAAS method for very simple and fast determination of total concentrations of Cu, Fe, Mn and Zn in grape juices with sample preparation developed by modeling experimental design and optimization. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104998] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Melo JC, Carvalho WC, Boa Morte ES, Araujo RGO, Santos DCMB. Sequential Determination of Cd, Co, Cu, Fe, Mg, Mn, Ni, Pb, and Zn in Powdered Refreshments by FS-F AAS After a Simple Sample Treatment. FOOD ANAL METHOD 2019. [DOI: 10.1007/s12161-019-01589-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Alves BSF, Pereira Junior JB, Carvalho FIM, Dantas Filho HA, Fernandes Dantas KG. Mineral Composition of Amazonian Fruits by Flame Atomic Absorption Spectrometry Using Multivariate Analysis. Biol Trace Elem Res 2019; 189:259-266. [PMID: 30097983 DOI: 10.1007/s12011-018-1451-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 07/17/2018] [Indexed: 10/28/2022]
Abstract
This study aimed to evaluate the mineral composition in native and non-native Amazonian fruits using flame atomic absorption spectrometry (FAAS) and multivariate methods, such as principal component analysis (PCA) and hierarchical cluster analysis (HCA), in order to conduct a more thorough evaluation of the original data. The accuracy was checked by certified reference material analysis (Poplar leaves) and spike experiments. The results of the analysis were in agreement with the certified values, with analytical recoveries for all analytes in an acceptable range from 82 to 113%, and relative standard deviations (RSD) were in the range of 0.2-18%. Furthermore, PCA explained 68% of the total variance, while HCA confirmed the correlations found in the PCA, allowing for the evaluation of the degree of similarity between the fruits studied. These results will be used to better understand the distribution of inorganic constituents within these Amazonian fruits.
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Affiliation(s)
- Bianca S F Alves
- Grupo de Espectrometria Analítica Aplicada, Faculdade de Química, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil
| | - João B Pereira Junior
- Grupo de Espectrometria Analítica Aplicada, Faculdade de Química, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil
| | - Fábio I M Carvalho
- Grupo de Espectrometria Analítica Aplicada, Faculdade de Química, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil
- Universidade Federal Rural da Amazônia, Campus Parauapebas, Parauapebas, PA, 68515-000, Brazil
| | - Heronides A Dantas Filho
- Grupo de Espectrometria Analítica Aplicada, Faculdade de Química, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil
| | - Kelly G Fernandes Dantas
- Grupo de Espectrometria Analítica Aplicada, Faculdade de Química, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil.
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Pohl P, Dzimitrowicz A, Jamroz P, Greda K. Development and optimization of simplified method of fast sequential HR-CS-FAAS analysis of apple juices on the content of Ca, Fe, K, Mg, Mn and Na with the aid of response surface methodology. Talanta 2018; 189:182-189. [DOI: 10.1016/j.talanta.2018.06.053] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 06/10/2018] [Accepted: 06/16/2018] [Indexed: 10/28/2022]
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15
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Pohl P, Dzimitrowicz A, Jamroz P, Greda K. HR-CS FAAS based method for direct determination of total concentrations of Ca, Fe, Mg and Mn in functional apple beverages and evaluation of contributions of the bioaccessible fraction of these elements by in vitro gastrointestinal digestion and chemical fractionation. Microchem J 2018. [DOI: 10.1016/j.microc.2018.04.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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16
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Erdemir US. Contribution of tea ( Camellia sinensis L .) to recommended daily intake of Mg, Mn, and Fe: An in vitro bioaccessibility assessment. J Food Compost Anal 2018. [DOI: 10.1016/j.jfca.2018.02.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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17
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Souza SO, Costa SSL, Brum BCT, Santos SH, Garcia CAB, Araujo RGO. Determination of nutrients in sugarcane juice using slurry sampling and detection by ICP OES. Food Chem 2018; 273:57-63. [PMID: 30292375 DOI: 10.1016/j.foodchem.2018.03.060] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 03/01/2018] [Accepted: 03/14/2018] [Indexed: 02/08/2023]
Abstract
The fractional factorial and Doehlert designs for optimization of a slurry sampling procedure to determine of nutrients in sugarcane juice by inductively coupled plasma optical emission spectrometry (ICP OES) were applied. External calibration curves were used for direct analysis of the slurry. This procedure allowed determination of Ca, Cu, Fe, K and Mg with limits of detection (LoD) obtained of 2.0, 0.04, 0.2, 1.0 and 1.5 mg L-1, respectively. The precision was expressed as relative standard deviation (%RSD), being better than 1.4% (n = 3). Accuracy was confirmed by comparison with sample digestion method. The results for analysis of fourteen sugarcane juices samples demonstrated that the nutrients Ca, Cu, Fe, K and Mg have average contents of 108, 0.506, 6.40, 470 and 114 mg L-1, respectively. The proposed analytical method is a good alternative for simultaneous determination of nutrients in sugarcane juice using introduction of slurries and detection by ICP OES.
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Affiliation(s)
- Sidnei Oliveira Souza
- Universidade Federal da Bahia, Instituto de Química, Departamento de Química Analítica, Salvador, Bahia 40170-115, Brazil
| | - Silvânio Silvério L Costa
- Universidade Federal da Bahia, Instituto de Química, Departamento de Química Analítica, Salvador, Bahia 40170-115, Brazil; Universidade Federal de Sergipe, Departamento de Química, Laboratório de Química Analítica Ambiental, São Cristóvão, Sergipe 49100-000, Brazil
| | - Bia Catarina T Brum
- Instituto Tecnológico e de Pesquisa do Estado de Sergipe (ITPS), Aracaju, Sergipe 49020-380, Brazil
| | - Samir Hipólito Santos
- Universidade Federal da Bahia, Instituto de Química, Departamento de Química Analítica, Salvador, Bahia 40170-115, Brazil
| | - Carlos Alexandre B Garcia
- Universidade Federal de Sergipe, Departamento de Química, Laboratório de Química Analítica Ambiental, São Cristóvão, Sergipe 49100-000, Brazil; Instituto Nacional de Ciência e Tecnologia do CNPq - INCT de Energia e Ambiente, Universidade Federal da Bahia, Salvador, BA, Brazil
| | - Rennan Geovanny O Araujo
- Universidade Federal da Bahia, Instituto de Química, Departamento de Química Analítica, Salvador, Bahia 40170-115, Brazil; Instituto Nacional de Ciência e Tecnologia do CNPq - INCT de Energia e Ambiente, Universidade Federal da Bahia, Salvador, BA, Brazil.
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18
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Anastácio M, Dos Santos APM, Aschner M, Mateus L. Determination of trace metals in fruit juices in the Portuguese market. Toxicol Rep 2018; 5:434-439. [PMID: 29854614 PMCID: PMC5977413 DOI: 10.1016/j.toxrep.2018.03.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 03/02/2018] [Accepted: 03/05/2018] [Indexed: 11/16/2022] Open
Abstract
Validation process for the analysis of metals in fruit juices was implemented. Cd, Cr, Pb, As, Ni and Mn were determined in fruit juices. 62% of the samples had Ni above the maximum permissible values according with the Portuguese legislation. All the samples had Mn above the Portuguese legislation limits. A reduction of metal concentration in Portuguese juices is recommended.
Fruit juices are amongst the most non-alcoholic beverages appreciated and consumed in European countries, including Portugal. These beverages contain minerals, nutrients, trace elements, vitamins and phytochemicals, which are essential for a healthy life. However, fruit juices may also contain high levels of metals, posing a health risk to humans, especially to children, since they consume more fruit juice per body weight unit, and have a less varied diet than adults. Thus, in order to guarantee food safety and to make sound nutritional considerations, fruit juices require careful investigation. The main purpose of this study was to determine arsenic (As), cadmium (Cd), chromium (Cr), lead (Pb), manganese (Mn) and nickel (Ni) concentrations in 21 fruit juices from 4 different brands, previously selected by the ASAE (Portuguese Food and Economic Safety Authority), and available in the Portuguese market. Results obtained were compared with permissible levels set out by WHO (World Health Organization), USEPA (United States Environmental Protection Agency), by the Portuguese law, and with similar studies performed in other countries. A validation process, including linearity, range, analytical thresholds, precision, accuracy and specificity/selectivity was conducted in order to guarantee reliable analytical data. The results showed that As levels in four samples, Ni in thirteen samples and Mn in all the twenty-one samples, were above the maximal permissible values specified by Decree-Law 306/2007 from 27th August of the Portuguese Legislation. These data establish the need for reduction of metal concentrations in consumed juices.
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Affiliation(s)
- Mariana Anastácio
- Instituto de Investigação do Medicamento, iMed.UL, Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal
| | - A P Marreilha Dos Santos
- Instituto de Investigação do Medicamento, iMed.UL, Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, NY, USA
| | - Luísa Mateus
- Instituto de Investigação do Medicamento, iMed.UL, Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal
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Pereira CC, de Souza AO, Oreste EQ, Vieira MA, Ribeiro AS. Evaluation of the use of a reflux system for sample preparation of processed fruit juices and subsequent determination of Cr, Cu, K, Mg, Na, Pb and Zn by atomic spectrometry techniques. Food Chem 2018; 240:959-964. [DOI: 10.1016/j.foodchem.2017.07.112] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 07/21/2017] [Accepted: 07/24/2017] [Indexed: 10/19/2022]
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20
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Laser-Induced Breakdown Spectroscopy for Rapid Discrimination of Heavy-Metal-Contaminated Seafood Tegillarca granosa. SENSORS 2017; 17:s17112655. [PMID: 29149053 PMCID: PMC5712873 DOI: 10.3390/s17112655] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 11/05/2017] [Accepted: 11/09/2017] [Indexed: 02/01/2023]
Abstract
Tegillarca granosa samples contaminated artificially by three kinds of toxic heavy metals including zinc (Zn), cadmium (Cd), and lead (Pb) were attempted to be distinguished using laser-induced breakdown spectroscopy (LIBS) technology and pattern recognition methods in this study. The measured spectra were firstly processed by a wavelet transform algorithm (WTA), then the generated characteristic information was subsequently expressed by an information gain algorithm (IGA). As a result, 30 variables obtained were used as input variables for three classifiers: partial least square discriminant analysis (PLS-DA), support vector machine (SVM), and random forest (RF), among which the RF model exhibited the best performance, with 93.3% discrimination accuracy among those classifiers. Besides, the extracted characteristic information was used to reconstruct the original spectra by inverse WTA, and the corresponding attribution of the reconstructed spectra was then discussed. This work indicates that the healthy shellfish samples of Tegillarca granosa could be distinguished from the toxic heavy-metal-contaminated ones by pattern recognition analysis combined with LIBS technology, which only requires minimal pretreatments.
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Bizjak Bat K, Eler K, Mazej D, Mozetič Vodopivec B, Mulič I, Kump P, Ogrinc N. Isotopic and elemental characterisation of Slovenian apple juice according to geographical origin: Preliminary results. Food Chem 2016; 203:86-94. [DOI: 10.1016/j.foodchem.2016.02.039] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 01/31/2016] [Accepted: 02/04/2016] [Indexed: 11/28/2022]
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22
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Peng Y, Guo W, Zhang P, Jin L. Heat-assisted slurry sampling GFAAS method for determination of lead in food standard reference materials. J Food Compost Anal 2015. [DOI: 10.1016/j.jfca.2015.03.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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23
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Carbonaceous Materials-12: a Novel Highly Sensitive Graphene Oxide-Based Carbon Electrode: Preparation, Characterization, and Heavy Metal Analysis in Food Samples. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-015-0198-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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24
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Kılıç S, Yenisoy-Karakaş S, Kılıç M. Metal Contamination in Fruit Juices in Turkey: Method Validation and Uncertainty Budget. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-015-0136-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Scientific Opinion on the risks to public health related to the presence of nickel in food and drinking water. EFSA J 2015. [DOI: 10.2903/j.efsa.2015.4002] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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26
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Yan J, Liu J, Xiong Y, Qin W, Tang C. Identification of the geographical origins of pomelos using multielement fingerprinting. J Food Sci 2015; 80:C228-33. [PMID: 25597424 DOI: 10.1111/1750-3841.12746] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Accepted: 10/03/2014] [Indexed: 11/29/2022]
Abstract
Eighty pomelo samples and 80 soil samples were examined using a multielement component test to predict the geographical origins of pomelos produced in 4 regions (Sichuan, Chongqing, Fujian, and Guangxi Provinces) of China. The concentrations of 8 elements were determined by atomic absorption spectrometry. Ca, K, and Na were the most abundant elements. Principal component analysis (PCA) and linear discriminant analysis (LDA) were applied to reduce the dimensionality of the multielement data from 8 to 2 while retaining the highest possible variance. Using PCA and LDA, 69.66% and 91.30%, respectively, of the pomelo origins were classified correctly using multielement variables, along with 67.06% and 83.40% for soil multielement analysis. Results indicated that the LDA method was more effective for geographical origin classification than PCA. The results of the multielement component test demonstrated its capability to screen pomelo origins rapidly.
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Affiliation(s)
- Jing Yan
- College of Food Science, Sichuan Agricultural Univ, Sichuan, 86-625014, China
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27
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Barbosa UA, dos Santos IF, Ferreira SLC, dos Santos AMP. Determination of micro and macro elements in iron supplements used for treatment of anemia and evaluation employing chemometric analysis tools. RSC Adv 2015. [DOI: 10.1039/c5ra03242c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This paper propose a method using inductively coupled plasma optical emission spectrometry for the determination of micro and macro elements in pharmaceutical formulations used for anemia treatment and evaluation by chemometrics analysis tools.
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Affiliation(s)
- Uenderson Araujo Barbosa
- Universidade Federal da Bahia
- Instituto de Química
- Salvador
- Brazil
- Instituto Nacional de Ciência e Tecnologia
| | | | - Sergio Luis Costa Ferreira
- Universidade Federal da Bahia
- Instituto de Química
- Salvador
- Brazil
- Instituto Nacional de Ciência e Tecnologia
| | - Ana Maria Pinto dos Santos
- Universidade Federal da Bahia
- Instituto de Química
- Salvador
- Brazil
- Instituto Nacional de Ciência e Tecnologia
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28
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Schultz AK, Barrett DM, Dungan SR. Effect of acidification on carrot (Daucus carota) juice cloud stability. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:11528-11535. [PMID: 25354298 DOI: 10.1021/jf5042855] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Effects of acidity on cloud stability in pasteurized carrot juice were examined over the pH range of 3.5-6.2. Cloud sedimentation, particle diameter, and ζ potential were measured at each pH condition to quantify juice cloud stability and clarification during 3 days of storage. Acidification below pH 4.9 resulted in a less negative ζ potential, an increased particle size, and an unstable cloud, leading to juice clarification. As the acidity increased, clarification occurred more rapidly and to a greater extent. Only a weak effect of ionic strength was observed when sodium salts were added to the juice, but the addition of calcium salts significantly reduced the cloud stability.
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Affiliation(s)
- Alison K Schultz
- Department of Food Science and Technology, and §Department of Chemical Engineering and Materials Science, University of California, Davis , Davis, California 95616, United States
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Toaldo IM, Cruz FA, Alves TDL, de Gois JS, Borges DLG, Cunha HP, da Silva EL, Bordignon-Luiz MT. Bioactive potential of Vitis labrusca L. grape juices from the Southern Region of Brazil: phenolic and elemental composition and effect on lipid peroxidation in healthy subjects. Food Chem 2014; 173:527-35. [PMID: 25466055 DOI: 10.1016/j.foodchem.2014.09.171] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 09/08/2014] [Accepted: 09/20/2014] [Indexed: 11/18/2022]
Abstract
Grapes are rich in polyphenols with biologically active properties. Although the bioactive potential of grape constituents are frequently reported, the effects of Brazilian Vitis labrusca L. grape juices ingestion have not been demonstrated in humans. This study identified the phenolic and elemental composition of red and white grape juices and the effect of organic and conventional red grape juice consumption on lipid peroxidation in healthy individuals. Concentrations of anthocyanins, flavanols and phenolic acids and the in vitro antioxidant activity were significantly higher in the organic juice. The macro-elements K, Ca, Na and Mg were the most abundant minerals in all juices. The acute consumption of red grape juices promoted significant decrease of lipid peroxides in serum and TBARS levels in plasma. It is concluded that red V. labrusca L. grape juices produced in Southern Brazil showed lipid peroxidation inhibition abilities in healthy subjects, regardless of the cultivation system.
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Affiliation(s)
- Isabela Maia Toaldo
- Departamento de Ciência e Tecnologia de Alimentos, Universidade Federal de Santa Catarina, Admar Gonzaga Rd., 1346, Itacorubi, 88034-001 Florianópolis, SC, Brazil
| | - Fernanda Alves Cruz
- Departamento de Análises Clínicas, Universidade Federal de Santa Catarina, Delfino Conti St., Trindade, 88040-900 Florianópolis, SC, Brazil
| | - Tatiana de Lima Alves
- Departamento de Análises Clínicas, Universidade Federal de Santa Catarina, Delfino Conti St., Trindade, 88040-900 Florianópolis, SC, Brazil
| | - Jefferson Santos de Gois
- Departamento de Química, Universidade Federal de Santa Catarina, Des. Vitor Lima Av., Trindade, 88040-900 Florianópolis, SC, Brazil
| | - Daniel L G Borges
- Departamento de Química, Universidade Federal de Santa Catarina, Des. Vitor Lima Av., Trindade, 88040-900 Florianópolis, SC, Brazil; INCT de Energia e Ambiente do CNPq(1), Florianópolis-SC, Brazil
| | - Heloisa Pamplona Cunha
- Departamento de Análises Clínicas, Universidade Federal de Santa Catarina, Delfino Conti St., Trindade, 88040-900 Florianópolis, SC, Brazil
| | - Edson Luiz da Silva
- Departamento de Análises Clínicas, Universidade Federal de Santa Catarina, Delfino Conti St., Trindade, 88040-900 Florianópolis, SC, Brazil
| | - Marilde T Bordignon-Luiz
- Departamento de Ciência e Tecnologia de Alimentos, Universidade Federal de Santa Catarina, Admar Gonzaga Rd., 1346, Itacorubi, 88034-001 Florianópolis, SC, Brazil.
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30
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Toaldo IM, de Gois JS, Fogolari O, Hamann D, Borges DLG, Bordignon-Luiz MT. Phytochemical Polyphenol Extraction and Elemental Composition of Vitis labrusca L. Grape Juices Through Optimization of Pectinolytic Activity. FOOD BIOPROCESS TECH 2014. [DOI: 10.1007/s11947-014-1288-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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32
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Analysis of mineral and heavy metal content of some commercial fruit juices by inductively coupled plasma mass spectrometry. ScientificWorldJournal 2013; 2013:215423. [PMID: 24453811 PMCID: PMC3881688 DOI: 10.1155/2013/215423] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 09/30/2013] [Indexed: 11/25/2022] Open
Abstract
The presence of potentially toxic elements and compounds in foodstuffs is of intense public interest and thus requires rapid and accurate methods to determine the levels of these contaminants. Inductively coupled plasma mass spectrometry is a powerful tool for the determination of metals and nonmetals in fruit juices. In this study, 21 commercial fruit juices (apple, peach, apricot, orange, kiwi, pear, pineapple, and multifruit) present on Romanian market were investigated from the heavy metals and mineral content point of view by ICP-MS. Our obtained results were compared with those reported in literature and also with the maximum admissible limit in drinking water by USEPA and WHO. For Mn the obtained values exceeded the limits imposed by these international organizations. Co, Cu, Zn, As, and Cd concentrations were below the acceptable limit for drinking water for all samples while the concentrations of Ni and Pb exceeded the limits imposed by USEPA and WHO for some fruit juices. The results obtained in this study are comparable to those found in the literature.
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33
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Evaluation of a simple and fast method for the multi-elemental analysis in commercial fruit juice samples using atomic emission spectrometry. Food Chem 2013; 141:3466-72. [DOI: 10.1016/j.foodchem.2013.06.067] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 05/21/2013] [Accepted: 06/15/2013] [Indexed: 11/17/2022]
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34
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Toaldo IM, Fogolari O, Pimentel GC, de Gois JS, Borges DL, Caliari V, Bordignon-Luiz M. Effect of grape seeds on the polyphenol bioactive content and elemental composition by ICP-MS of grape juices from Vitis labrusca L. Lebensm Wiss Technol 2013. [DOI: 10.1016/j.lwt.2013.02.028] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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35
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Ramesh M, Lin HC, Chu CW. Organic thin film transistors as selective sensing platforms for Hg2+ ions and the amino acidcysteine. Biosens Bioelectron 2013. [DOI: 10.1016/j.bios.2012.10.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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36
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Geographical Characterization of Beans Based on Trace Elements After Microwave-Assisted Digestion Using Diluted Nitric Acid. FOOD ANAL METHOD 2012. [DOI: 10.1007/s12161-012-9520-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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37
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Akamatsu S, Yoshioka N, Mitsuhashi T. Sensitive determination of cadmium in brown rice and spinach by flame atomic absorption spectrometry with solid-phase extraction. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2012; 29:1696-700. [PMID: 22849394 DOI: 10.1080/19440049.2012.706835] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
A sensitive flame atomic absorption spectrometry (FAAS) method was developed for the determination of cadmium (Cd) in brown rice and spinach. The method involves extraction with 1 M hydrochloric acid (HCl), followed by a selective pre-concentration by solid-phase extraction (SPE). The pH of the loading sample solution was adjusted to 4.0 for the brown rice and to 5.0 for the spinach. The masking agents, tartrate and citrate, were required for the spinach before pH adjustment. The SPE step achieved a 20-fold enrichment of the sample solution. The limits of quantification (LOQs) were 0.0054 mg kg⁻¹ for the brown rice and 0.0022 mg kg⁻¹ for the spinach, being more sensitive than those of AOAC Official method 999.10. A single-laboratory validation was performed by testing spiked samples at 0.04 and 0.08 mg kg⁻¹ for the brown rice, and 0.02 and 0.04 mg kg⁻¹ for the spinach. The average recoveries were 93.3-96.9% with relative standard deviations (RSDs) of 4.1-8.2% for brown rice, and 90.5-91.9% with RSDs of 5.8-10.0% for spinach.
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Affiliation(s)
- Shigeki Akamatsu
- Hyogo Prefectural Institute of Public Health and Consumer Sciences, 2-1-29 Arata-cho, Hyogo-ku, Kobe 652-0032, Japan.
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38
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Zhou Y, Tian XL, Li YS, Zhang YY, Yang L, Zhang JH, Wang XR, Lu SY, Ren HL, Liu ZS. A versatile and highly sensitive probe for Hg(II), Pb(II) and Cd(II) detection individually and totally in water samples. Biosens Bioelectron 2011; 30:310-4. [DOI: 10.1016/j.bios.2011.08.034] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Revised: 08/15/2011] [Accepted: 08/16/2011] [Indexed: 10/17/2022]
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39
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Cindrić IJ, Zeiner M, Kröppl M, Stingeder G. Comparison of sample preparation methods for the ICP-AES determination of minor and major elements in clarified apple juices. Microchem J 2011. [DOI: 10.1016/j.microc.2011.06.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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