Pub Date : 2000-11-01DOI: 10.1051/ANALUSIS:2000151
P. Perämäki, M. Pesonen, J. Piispanen
Two sample decomposition methods were optimized for the determination of arsenic by graphite furnace atomic absorption spectrometry (GFAAS) in moss and humus samples. In the first method, 5,0 ml of HNO 3 and 3,0 ml of H 2 O 2 were used for the decomposition of 500 mg of sample. When humus samples were decomposed in this way a slight, undissolved residue remained. Therefore, another sample decomposition method, including hydrofluoric acid, was also tested (5,0 ml HNO 3 ; 3,0 ml H 2 O 2 ; 0,4 ml HF; 2,5 ml H 3 BO 3 ). Pyrolytically coated graphite tubes, equipped with integrated or L'vov platfoms, were used in the determination of arsenic by GFAAS. Palladium-magnesium nitrate was used as a matrix modifier. Several reference materials (e.g. humus, moss, lichen, sea lettuce) were analyzed.
对石墨炉原子吸收光谱法测定苔藓和腐殖质样品中砷的两种分解方法进行了优化。在第一种方法中，用5,0ml的hno3和3,0ml的h2o2分解500mg的样品。当腐殖质样品以这种方式分解时，会留下少量未溶解的残留物。因此，还测试了另一种样品分解方法，包括氢氟酸(5,0 ml hno3;3,0 ml h2o2;0、4 ml HF;2,5 ml h3bo 3)。采用热包覆石墨管，配以集成或L’vov平台，采用原子吸收光谱法测定砷。采用硝酸钯镁作为基体改性剂。分析了几种参考物质(如腐殖质、苔藓、地衣、海莴苣)。
{"title":"Development of a microwave sample preparation method for the determination of arsenic in humus and moss samples by graphite furnace atomic absorption spectrometry.","authors":"P. Perämäki, M. Pesonen, J. Piispanen","doi":"10.1051/ANALUSIS:2000151","DOIUrl":"https://doi.org/10.1051/ANALUSIS:2000151","url":null,"abstract":"Two sample decomposition methods were optimized for the determination of arsenic by graphite furnace atomic absorption spectrometry (GFAAS) in moss and humus samples. In the first method, 5,0 ml of HNO 3 and 3,0 ml of H 2 O 2 were used for the decomposition of 500 mg of sample. When humus samples were decomposed in this way a slight, undissolved residue remained. Therefore, another sample decomposition method, including hydrofluoric acid, was also tested (5,0 ml HNO 3 ; 3,0 ml H 2 O 2 ; 0,4 ml HF; 2,5 ml H 3 BO 3 ). Pyrolytically coated graphite tubes, equipped with integrated or L'vov platfoms, were used in the determination of arsenic by GFAAS. Palladium-magnesium nitrate was used as a matrix modifier. Several reference materials (e.g. humus, moss, lichen, sea lettuce) were analyzed.","PeriodicalId":8221,"journal":{"name":"Analusis","volume":"30 1","pages":"830-834"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83341593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-11-01DOI: 10.1051/ANALUSIS:2000148
E. L. Fur, R. Colin, C. Charreteur, C. Dufau, J. Peron
An analytical method has been developed for the determination of glyphosate herbicide and its metabolite aminomethylphosphonic acid (AMPA) in natural waters to a level of 0.10 µg/L with a good linearity in the range 0.10-2.00 µg/L and coefficients of variation under 20 % for each spiked level. The procedure involves a precolumn derivatization step with 9-fluorenylmethylchloroformate (FMOC-Cl) yielding highly fluorescent derivatives of the analytes which then can be determined by HPLC with fluorescence detection. The method is used for analysis of natural (surface and ground) and treated waters. Matric e effects have been pointed out, particularly the effects of hard ionic content and the effects of chlorine residues into treated waters.
{"title":"Determination of glyphosate herbicide and aminomethylphosphonic acid in natural waters by liquid chromatography using pre-column fluorogenic labeling. Part I: Direct determination at the 0.1 μg/L level using FMOC","authors":"E. L. Fur, R. Colin, C. Charreteur, C. Dufau, J. Peron","doi":"10.1051/ANALUSIS:2000148","DOIUrl":"https://doi.org/10.1051/ANALUSIS:2000148","url":null,"abstract":"An analytical method has been developed for the determination of glyphosate herbicide and its metabolite aminomethylphosphonic acid (AMPA) in natural waters to a level of 0.10 µg/L with a good linearity in the range 0.10-2.00 µg/L and coefficients of variation under 20 % for each spiked level. The procedure involves a precolumn derivatization step with 9-fluorenylmethylchloroformate (FMOC-Cl) yielding highly fluorescent derivatives of the analytes which then can be determined by HPLC with fluorescence detection. The method is used for analysis of natural (surface and ground) and treated waters. Matric e effects have been pointed out, particularly the effects of hard ionic content and the effects of chlorine residues into treated waters.","PeriodicalId":8221,"journal":{"name":"Analusis","volume":"69 1","pages":"813-818"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90638958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-11-01DOI: 10.1051/ANALUSIS:2000280801
C. Minier, G. Caltot, F. Leboulanger, E. Hill
The incidence of intersex was examined in freshwater fish in one English and three French rivers. Over 331 fish, mainly roach, were sampled above and below the major sewage treatment works (STW) on each river and the incidence of intersex was recorded by histological examination of fish gonads. No intersex conditions were observed in male fish collected either above or below the major STW on the River Ouse in Sussex. In contrast, roach showing primary oocytes in their testes were found in all three French rivers with the incidence ranging from 9 to 21 % of the males. An intersex chubb and gudgeon were also caught, showing that other species can suffer from this pathology. In addition, roach in the River Seine were heavily parasitised with the tapeworm Ligula intestinalis which may impair the reproductive capabilities of the fish. Introduction
{"title":"■ An investigation of the incidence of intersex fish in Seine-Maritime and Sussex regions","authors":"C. Minier, G. Caltot, F. Leboulanger, E. Hill","doi":"10.1051/ANALUSIS:2000280801","DOIUrl":"https://doi.org/10.1051/ANALUSIS:2000280801","url":null,"abstract":"The incidence of intersex was examined in freshwater fish in one English and three French rivers. Over 331 fish, mainly roach, were sampled above and below the major sewage treatment works (STW) on each river and the incidence of intersex was recorded by histological examination of fish gonads. No intersex conditions were observed in male fish collected either above or below the major STW on the River Ouse in Sussex. In contrast, roach showing primary oocytes in their testes were found in all three French rivers with the incidence ranging from 9 to 21 % of the males. An intersex chubb and gudgeon were also caught, showing that other species can suffer from this pathology. In addition, roach in the River Seine were heavily parasitised with the tapeworm Ligula intestinalis which may impair the reproductive capabilities of the fish. Introduction","PeriodicalId":8221,"journal":{"name":"Analusis","volume":"3 1","pages":"801-806"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86886860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-11-01DOI: 10.1051/ANALUSIS:2000280776
P. Voogt, O. Kwast, R. Hendriks, N. Jonkers
Analytical procedures were optimized for the analysis of surfactants and their degradation products in abiotic and biological samples. The procedures include filtration of water samples and Soxhlet extraction of sediment or sludge samples, followed by automated SPE (C-18 cartridge) and cleanup (Al 2 O 3) . For biological materials a matrix dispersed solid phase extraction method was used. Using these methods, information was obtained about the efficiency of the sewage treatment plants, the changes in oligomer ratios of APEO between influent and effluent, the formation and occurrence of metabolites, and the internal concentrations that may occur when mussels are exposed to APEO in the field.
{"title":"Alkylphenol ethoxylates and their degradation products in abiotic and biological samples from the environment.","authors":"P. Voogt, O. Kwast, R. Hendriks, N. Jonkers","doi":"10.1051/ANALUSIS:2000280776","DOIUrl":"https://doi.org/10.1051/ANALUSIS:2000280776","url":null,"abstract":"Analytical procedures were optimized for the analysis of surfactants and their degradation products in abiotic and biological samples. The procedures include filtration of water samples and Soxhlet extraction of sediment or sludge samples, followed by automated SPE (C-18 cartridge) and cleanup (Al 2 O 3) . For biological materials a matrix dispersed solid phase extraction method was used. Using these methods, information was obtained about the efficiency of the sewage treatment plants, the changes in oligomer ratios of APEO between influent and effluent, the formation and occurrence of metabolites, and the internal concentrations that may occur when mussels are exposed to APEO in the field.","PeriodicalId":8221,"journal":{"name":"Analusis","volume":"82 1","pages":"776-782"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84011329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-11-01DOI: 10.1051/analusis:2000280761
P. Garrigues
http://www.edpsciences.org Endocrine disruptors: Analytical and toxicological aspects Over the last 5 years, concerns have increased about chemicals in the environment, which influence the reproductive capabilities of human and animals. Reproductive hormone-receptor systems appear to be especially vulnerable. Hormonal disturbances in wildlife include sex changes in riverine fish and marine snails, reproductive failure in birds, genital tract malformations in mammals. These effects may be attributed to various classes of chemicals such as chlorinated pesticides (DDT, endrin, pentachlorophenol) or chlorinated aromatic compounds (PCBs, dioxins), metals (cadmium, selenium, zinc, mercury, tributyltin), alkylphenols (nonylphenol, pentylphenol, bisphenol), phytooestrogens. The identification of the chemicals responsible of these reproductive alterations is difficult and demands the development of specific procedures to analyse these compounds in complex environmental mixtures. Moreover the causal relationships between the exposure to these substances by wildlife organisms and the adverse effects on reproduction in the environment are not yet clear evidence.
{"title":"Endocrine disruptors: Analytical and toxicological aspects","authors":"P. Garrigues","doi":"10.1051/analusis:2000280761","DOIUrl":"https://doi.org/10.1051/analusis:2000280761","url":null,"abstract":"http://www.edpsciences.org Endocrine disruptors: Analytical and toxicological aspects Over the last 5 years, concerns have increased about chemicals in the environment, which influence the reproductive capabilities of human and animals. Reproductive hormone-receptor systems appear to be especially vulnerable. Hormonal disturbances in wildlife include sex changes in riverine fish and marine snails, reproductive failure in birds, genital tract malformations in mammals. These effects may be attributed to various classes of chemicals such as chlorinated pesticides (DDT, endrin, pentachlorophenol) or chlorinated aromatic compounds (PCBs, dioxins), metals (cadmium, selenium, zinc, mercury, tributyltin), alkylphenols (nonylphenol, pentylphenol, bisphenol), phytooestrogens. The identification of the chemicals responsible of these reproductive alterations is difficult and demands the development of specific procedures to analyse these compounds in complex environmental mixtures. Moreover the causal relationships between the exposure to these substances by wildlife organisms and the adverse effects on reproduction in the environment are not yet clear evidence.","PeriodicalId":8221,"journal":{"name":"Analusis","volume":"11 1","pages":"761-762"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90904229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-11-01DOI: 10.1051/ANALUSIS:2000159
N. Ricq, S. Barbati, M. Ambrosio
The aim of this work is to optimize the degradation yield of an activated sludge and to study the reaction mechanism on a cellulose model compound. This optimization is performed with a Simplex design with four parameters: reaction temperature (280- 350 °C), injected air pressure (40-60 MPa), reaction time (10-45 minutes) and COD concentration (0.5-5 g L -1). The better yield obtained on TOC concentration is 82 5% at 330 °C. Over this temperature, the yield substantially decreases. The use of cellulose a s a model compound for activated sludge confirms optimization results and leads to the identification of by-products and free rad ical species participating in the reaction. Two major organic compounds have been detected: 4-oxo pentanoic acid and 3-oxo butanoic acid, and three types of radicals: HO°, CO 2° -and °CH(OH)CH3.
本工作的目的是优化活性污泥的降解率，并研究纤维素模型化合物的反应机理。该优化采用Simplex设计，包括四个参数:反应温度(280- 350°C)，注入空气压力(40-60 MPa)，反应时间(10-45分钟)和COD浓度(0.5-5 g L -1)。在330℃条件下，TOC的收率为82.5%。超过这个温度，产率就大大降低。纤维素作为活性污泥的模型化合物的使用证实了优化结果，并导致了参与反应的副产物和自由基的鉴定。检测到两种主要的有机化合物:4-氧戊酸和3-氧丁酸，以及三种自由基:HO°、CO 2°和CH(OH)CH3。
{"title":"Optimization of the degradation of sewage sludge by wet air oxidation. Study of the reaction mechanism on a cellulose model compound","authors":"N. Ricq, S. Barbati, M. Ambrosio","doi":"10.1051/ANALUSIS:2000159","DOIUrl":"https://doi.org/10.1051/ANALUSIS:2000159","url":null,"abstract":"The aim of this work is to optimize the degradation yield of an activated sludge and to study the reaction mechanism on a cellulose model compound. This optimization is performed with a Simplex design with four parameters: reaction temperature (280- 350 °C), injected air pressure (40-60 MPa), reaction time (10-45 minutes) and COD concentration (0.5-5 g L -1). The better yield obtained on TOC concentration is 82 5% at 330 °C. Over this temperature, the yield substantially decreases. The use of cellulose a s a model compound for activated sludge confirms optimization results and leads to the identification of by-products and free rad ical species participating in the reaction. Two major organic compounds have been detected: 4-oxo pentanoic acid and 3-oxo butanoic acid, and three types of radicals: HO°, CO 2° -and °CH(OH)CH3.","PeriodicalId":8221,"journal":{"name":"Analusis","volume":"30 1","pages":"872-877"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75623553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-11-01DOI: 10.1051/ANALUSIS:2000160
E. Vassileva
A flow-injection analysis (FIA) system incorporating two microcolumns of TiO 2 was used for the developing of an on- line method for preconcentration and sequential determination of Cr 3+ and Cr6+ species by inductively coupled plasma atomic emission spectrometry (ICP-AES). The optimal conditions for both analytes have been obtained. With a sample volume of 10-50 ml and an elution volume of 500 µl, a signal was 20-100 times higher than the signal given by a continuous aspiration system. The method gave good reproducibility with precisions less than 7 % RSD for 5 replicates at the 10 ng/ml level for both Cr- species. Recoveries between 95 and 98 % were obtained for Cr 3+ and Cr6+. The preconcentration system and the methodology proposed were validated on several natural water samples, on reference water samples as well as on synthetic seawater. It was found that the on-line detection using ICP-AES allows sequential Cr speciation analysis at the low concentration levels (ng/l) usually encountered in these media.
{"title":"Use of high surface area TiO$_2$ for preconcentration and following determination of Cr species by on-line flow injection inductively coupled plasma atomic emission spectrometry","authors":"E. Vassileva","doi":"10.1051/ANALUSIS:2000160","DOIUrl":"https://doi.org/10.1051/ANALUSIS:2000160","url":null,"abstract":"A flow-injection analysis (FIA) system incorporating two microcolumns of TiO 2 was used for the developing of an on- line method for preconcentration and sequential determination of Cr 3+ and Cr6+ species by inductively coupled plasma atomic emission spectrometry (ICP-AES). The optimal conditions for both analytes have been obtained. With a sample volume of 10-50 ml and an elution volume of 500 µl, a signal was 20-100 times higher than the signal given by a continuous aspiration system. The method gave good reproducibility with precisions less than 7 % RSD for 5 replicates at the 10 ng/ml level for both Cr- species. Recoveries between 95 and 98 % were obtained for Cr 3+ and Cr6+. The preconcentration system and the methodology proposed were validated on several natural water samples, on reference water samples as well as on synthetic seawater. It was found that the on-line detection using ICP-AES allows sequential Cr speciation analysis at the low concentration levels (ng/l) usually encountered in these media.","PeriodicalId":8221,"journal":{"name":"Analusis","volume":"40 1","pages":"878-884"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72645675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-11-01DOI: 10.1051/ANALUSIS:2000153
M. Sabbieti, L. Marchetti, R. Curini, G. Menghi, A. Roda, M. V. Russo, C. Nugnes, S. Materazzi
The phtalate induced modifications on osteoblastic cells have been monitored in a model system in vitro: preliminary encouraging results, independently obtained by calorimetry (DSC), confocal laser scanning microscopy (CLSM) and coupled gas chromatography-mass spectrometry (GC-MS), show the possibility to relate kinetic data and immunofluorescence images, that are very useful to show the entry and the localization of phtalate into the cells. The calorimetric data were obtained by a cellula r liv- ing system growth and reacting into the aluminium pans.
{"title":"Evidence of butyl benzyl phtalate induced modifications in a model system developed in vitro","authors":"M. Sabbieti, L. Marchetti, R. Curini, G. Menghi, A. Roda, M. V. Russo, C. Nugnes, S. Materazzi","doi":"10.1051/ANALUSIS:2000153","DOIUrl":"https://doi.org/10.1051/ANALUSIS:2000153","url":null,"abstract":"The phtalate induced modifications on osteoblastic cells have been monitored in a model system in vitro: preliminary encouraging results, independently obtained by calorimetry (DSC), confocal laser scanning microscopy (CLSM) and coupled gas chromatography-mass spectrometry (GC-MS), show the possibility to relate kinetic data and immunofluorescence images, that are very useful to show the entry and the localization of phtalate into the cells. The calorimetric data were obtained by a cellula r liv- ing system growth and reacting into the aluminium pans.","PeriodicalId":8221,"journal":{"name":"Analusis","volume":"98 1","pages":"843-846"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76135949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-11-01DOI: 10.1051/ANALUSIS:2000149
R. Colin, E. L. Fur, C. Charreteur, C. Dufau, J. Peron
An analytical method was developed for the determination of glyphosate and AMPA in water. This method involves derivatization in situ with NBD-Cl reagent at 60 °C. The quantification is performed using liquid chromatography with fluores- cence detection after a separation on an amino column. The limit of quantification was estimated at 1 µg/L level for glyphosate and at 0.1 µg/L level for AMPA.
{"title":"Determination of glyphosate herbicide and (aminomethyl)phosphonic acid (AMPA) in water by liquid chromatography and fluorescence detection. Part II: Direct determination using pre-column derivatization with NBD-Cl.","authors":"R. Colin, E. L. Fur, C. Charreteur, C. Dufau, J. Peron","doi":"10.1051/ANALUSIS:2000149","DOIUrl":"https://doi.org/10.1051/ANALUSIS:2000149","url":null,"abstract":"An analytical method was developed for the determination of glyphosate and AMPA in water. This method involves derivatization in situ with NBD-Cl reagent at 60 °C. The quantification is performed using liquid chromatography with fluores- cence detection after a separation on an amino column. The limit of quantification was estimated at 1 µg/L level for glyphosate and at 0.1 µg/L level for AMPA.","PeriodicalId":8221,"journal":{"name":"Analusis","volume":"69 1","pages":"819-824"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76532418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-11-01DOI: 10.1051/ANALUSIS:2000150
M. Cardinal, C. Viallon, C. Thonat, J. Berdagué
Current concern for the safety and traceability of food, as well as the desire of oyster farmers, for marketing reason, to emphasise the geographical origin of their production, requires new methods to make possible a real product identification. I n this study, 181 oyster samples were analysed to determine their origin area. These samples were collected in nine French rear- ing areas at four different times of the year (spring, summer, and the beginning and end of autumn) and from four to eight sites in each area to provide a variability parameter. Analysis of fingerprints after Curie point pyrolysis-mass spectrometry, by an a rti- ficial neural network gave a mean classification rate of 89 %. Although the technique requires further improvements, it appears to be a useful discriminative tool for rapid identification of an oyster production area.
{"title":"Pyrolysis-mass spectrometry for rapid classification of oysters according to rearing area.","authors":"M. Cardinal, C. Viallon, C. Thonat, J. Berdagué","doi":"10.1051/ANALUSIS:2000150","DOIUrl":"https://doi.org/10.1051/ANALUSIS:2000150","url":null,"abstract":"Current concern for the safety and traceability of food, as well as the desire of oyster farmers, for marketing reason, to emphasise the geographical origin of their production, requires new methods to make possible a real product identification. I n this study, 181 oyster samples were analysed to determine their origin area. These samples were collected in nine French rear- ing areas at four different times of the year (spring, summer, and the beginning and end of autumn) and from four to eight sites in each area to provide a variability parameter. Analysis of fingerprints after Curie point pyrolysis-mass spectrometry, by an a rti- ficial neural network gave a mean classification rate of 89 %. Although the technique requires further improvements, it appears to be a useful discriminative tool for rapid identification of an oyster production area.","PeriodicalId":8221,"journal":{"name":"Analusis","volume":"6 1","pages":"825-829"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82444879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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