Analusis最新文献_第4页

Identification of 4-n-nonylphenol metabolic pathways and residues in aquatic organisms by HPLC and LC-MS analyses 用HPLC和LC-MS分析鉴定4-n-壬基酚在水生生物中的代谢途径和残留

Analusis Pub Date : 2000-11-01 DOI: 10.1051/ANALUSIS:2000280793

R. Thibaut, A. Jumel, L. Debrauwer, E. Rathahao, L. Lagadic, J. Cravedi

{"title":"Identification of 4-n-nonylphenol metabolic pathways and residues in aquatic organisms by HPLC and LC-MS analyses","authors":"R. Thibaut, A. Jumel, L. Debrauwer, E. Rathahao, L. Lagadic, J. Cravedi","doi":"10.1051/ANALUSIS:2000280793","DOIUrl":"https://doi.org/10.1051/ANALUSIS:2000280793","url":null,"abstract":"In order to better assess the risk associated with nonylphenol, a lipophilic contaminant of the aquatic environment having a strong tendency to bioaccumulate in organisms and exerting estrogenic effects in fish and invertebrates, we have investigated the capability of three types of freshwater species to metabolize labelled 4-n-nonylphenol. Reverse-phase radio-HPLC was used to isolate and quantify the metabolites. The identification of residues was based on co-chromatography with available standards or authenfified metabolites and when possible by electrospray ionization LC-MS analyses. The residues found in rainbow trout (Oncorhynchus mykiss), pond snails (Lymnea stagnalis) and duckweeds (Lemna minor) were identified. These freshwater organisms are able to extensively biotransform 4-n-nonylphenol. Our attempts to draw the metabolic pathways of nonlyphenol evidenced oxidative attack on the alkyl chain with the production of several hydroxylated compounds and related carboxylic acids. In addition, trout and duck-weeds were able to conjugate the phenol moiety to glucuronic acid and carbohydrates respectively. Traces of sulphate conjugates were also detected in trout tissues whereas no conjugate was detected in pond snails.","PeriodicalId":8221,"journal":{"name":"Analusis","volume":"33 1","pages":"793-801"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81503891","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}

引用次数: 26

Comparison of dissolution methods for multi-element analysis of some plant materials used as bioindicator of sulphur and heavy metal deposition determined by ICP-AES and ICP-MS ICP-AES法和ICP-MS法测定植物中硫和重金属沉降的多元素测定方法比较

Analusis Pub Date : 2000-11-01 DOI: 10.1051/ANALUSIS:2000155

R. Pöykiö, H. Torvela, P. Perämäki, T. Kuokkanen, H. Rönkkömäki

引用次数: 34

Stability of herbicides and their degradation products on graphitized carbon black extraction cartridges used for large volumes of surface water 用于大容量地表水的石墨化炭黑萃取筒上除草剂及其降解产物的稳定性

Analusis Pub Date : 2000-11-01 DOI: 10.1051/ANALUSIS:2000152

H. Sabik, R. Jeannot, E. Sauvard

{"title":"Stability of herbicides and their degradation products on graphitized carbon black extraction cartridges used for large volumes of surface water","authors":"H. Sabik, R. Jeannot, E. Sauvard","doi":"10.1051/ANALUSIS:2000152","DOIUrl":"https://doi.org/10.1051/ANALUSIS:2000152","url":null,"abstract":"The stability of 18 herbicides (ten organonitrogens and eight phenylureas, including four degradation products), selected for the frequency of their detection in the environment, was evaluated under a variety of storage conditions. Large volumes of s ur- face water (4 L) were extracted using large-particle-size graphitized carbon black cartridges (Carbopack B 60-80 mesh). The effe cts of temperature, matrix type, drying and solvent-washing of cartridges on the recovery of these contaminants, after different stora ge periods, were studied and compared to the conservation of surface water in bottles. After two months, there was no significant di ffer- ence between the conserved surface water and the stored cartridges for the selected compounds. Cartridges kept at -20 °C were be t- ter than those stored at 4 °C and 20 °C. The type of matrix water selected, in this case St. Lawrence surface water, appears to hav e a minor effect on the recovery of the target pesticides after cartridge storage. No improvement was observed in the recovery of a ny of the chemicals when the cartridges were dried or washed and stored in a solvent. After immediate surface-water extraction, the mo st practical storage condition for the target herbicides was found to be storage on cartridges in the dark at - 20 °C, with no solven t dry- ing or washing of the Carbopack B material.","PeriodicalId":8221,"journal":{"name":"Analusis","volume":"68 1","pages":"835-842"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80279187","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}

引用次数: 10

A novel ion selective PVC membrane electrode for determination of propranolol in pharmaceutical formulation 一种新型离子选择性PVC膜电极测定制剂中心得安的方法

Analusis Pub Date : 2000-11-01 DOI: 10.1051/analusis:2000156

H. Aboul‐Enein, X. Sun

引用次数: 29

Efficiency of extractants to release As, Cd and Zn from main soil compartments. 萃取剂从主要土壤区室释放砷、镉和锌的效率。

Analusis Pub Date : 2000-11-01 DOI: 10.1051/ANALUSIS:2000147

J. Száková, P. Tlustoš, J. Balík, D. Pavlíková, M. Balíková

{"title":"Efficiency of extractants to release As, Cd and Zn from main soil compartments.","authors":"J. Száková, P. Tlustoš, J. Balík, D. Pavlíková, M. Balíková","doi":"10.1051/ANALUSIS:2000147","DOIUrl":"https://doi.org/10.1051/ANALUSIS:2000147","url":null,"abstract":"Various soil extraction methods were developed for the determination of total and/or plant-available concentrations of potentially toxic elements. In this experiment, four single extraction procedures ( aqua regia, HNO3, acetic acid, DTPA) were tested for the determination of extractable contents of As, Cd and Zn. 35 soils differing in their physicochemical properties an d in total element contents were used in this experiment. Extractability of elements from soil samples varied following the indi- vidual elements and/or extraction agents used. The strong acids were not able to release the elements tightly bound into the si l- icate sample matrix. However, such techniques remain utilizable for the approximate determination of \"pseudototal\" element con- tents in soil, especially if soil samples are affected by anthropogenic contamination. The concentrations of As, Cd, and Zn determined in soil extracts by both mineral and organic acids covered in most cases the element portion representing more than one soil element fraction determined using SM&T sequential extraction procedure. Solutions of acetic acid and DTPA were able to release a part of the element fraction bound in Fe/Mn oxides and organic matter of soil sample. Arsenic represents an excep- tion because it is not released by DTPA.","PeriodicalId":8221,"journal":{"name":"Analusis","volume":"1 1","pages":"808-812"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72822131","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}

引用次数: 46

Estrogenicity determination in carp, Cyprinus carpio: a laboratory and field approach 鲤鱼雌性激素的测定:实验室和现场方法

Analusis Pub Date : 2000-11-01 DOI: 10.1051/ANALUSIS:2000280783

M. Solé, M. Castillo, M. Alda, C. Porte, D. Barceló

引用次数: 5

Scanning electron microscopy and energy dispersive spectrometric microanalysis of crystalline deposits following evaporation of CO$_3$H$^-$, Mg$^{2+}$ and Ca$^{2+}$ containing aqueous solutions 含CO$_3$H$^-$， Mg$^{2+}$和Ca$^{2+}$的水溶液蒸发后结晶沉积的扫描电子显微镜和能量色散光谱微观分析

Analusis Pub Date : 2000-11-01 DOI: 10.1051/ANALUSIS:2000158

J. Surlève‐Bazeille, M. Mercier, R. Tarroux, A. Mavon, E. Neuzil, D. Licu, P. Dupuy

引用次数: 0

Free-electron lasers sources for scientific applications 科学应用的自由电子激光源

Analusis Pub Date : 2000-10-01 DOI: 10.1051/ANALUSIS:2000143

M. Couprie, J. Ortega

引用次数: 8

Clossed-vessel assisted microwave extraction of polychlorinated biphenyls in marine mussels 密闭容器辅助微波萃取贻贝中多氯联苯

Analusis Pub Date : 2000-10-01 DOI: 10.1051/ANALUSIS:2000142

N. Carro, I. García, M. Llompart

引用次数: 19

Principles and recent analytical applications of chemiluminescence. 化学发光的原理及最新分析应用。

Analusis Pub Date : 2000-10-01 DOI: 10.1051/ANALUSIS:2000280686

A. García-Campaña, W. Baeyens

{"title":"Principles and recent analytical applications of chemiluminescence.","authors":"A. García-Campaña, W. Baeyens","doi":"10.1051/ANALUSIS:2000280686","DOIUrl":"https://doi.org/10.1051/ANALUSIS:2000280686","url":null,"abstract":"The potentials and possibilities offered by the rather unknown chemiluminescence-based analytical technique are discussed. Simplificity of instrumentation, low detection limits for various systems, and the inherent power of application to a vast number of natively fluorescing species or fluorophores formed after chemical derivatization broaden the scope of this relatively new detection technique. Drawbacks should be mentioned as well, amongst others limited selectiity of analysis (unless coupled to a powerful separational set-up), unexpected poor sensitivities for various analytes and the need to include an extra reaction step in the analytical procedures. Apart from the earlier gas-phase applications, the analysis in flowing streams (flow injection analysis, HPLC, and even capillary electrophoresis) has increased exponentially starting back in the early eighties. Various reagents have become available, including some originating from bioluminescent reactions (e.g. for ATP- and related analysis), not to forget the light emission as produced by diverse oxidation reactions, many of which the exact chemical pathways are not elucidated yet. On top of this, the power of chemiluminescence induction and measurements as applied to immunoassays, in the development of sensors, and, even more important, in the fast developing area of micromachining (sub-droplet-sized capillary electrophoresis) are discussed.","PeriodicalId":8221,"journal":{"name":"Analusis","volume":"64 1","pages":"686-698"},"PeriodicalIF":0.0,"publicationDate":"2000-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88923517","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}

引用次数: 50