Journal of chromatography最新文献_第9页

Chromatographic determination of volatile solvents and their metabolites in urine for monitoring occupational exposure. 职业暴露监测中尿液挥发性溶剂及其代谢物的色谱测定。

Journal of chromatography Pub Date : 1993-07-23 DOI: 10.1016/0021-9673(93)80575-s

A Astier

{"title":"Chromatographic determination of volatile solvents and their metabolites in urine for monitoring occupational exposure.","authors":"A Astier","doi":"10.1016/0021-9673(93)80575-s","DOIUrl":"https://doi.org/10.1016/0021-9673(93)80575-s","url":null,"abstract":"The determination of volatile solvents and their metabolites in biological materials such as expired air, blood or urine allows the estimation of the degree of exposure of these chemicals. Chromatographic methods are now universally employed for this purpose and numerous analytical procedures are available for the determination of the most commonly used volatile solvents and their metabolites in urine. GC methods appear well adapted to the determination of the parent volatile solvents in blood and urine and may be used for the determination of their urinary metabolites, but these methods often require several prechromatographic steps. However, HPLC is becoming a powerful tool for the accurate and easy determination of urinary metabolites of volatile solvents, considering its decisive advantages for routine monitoring. Further, recent developments in HPLC could widen the usefulness of this method for most complex analytical problems that could be encountered during this measurement. However, despite the relative neglect of planar chromatography in this area of concern and considering the great interest in methods that could permit the simultaneous assay of numerous samples often required by routine monitoring, new approach using improved methods such as overpressured TLC could be very fruitful in the future.","PeriodicalId":15508,"journal":{"name":"Journal of chromatography","volume":"643 1-2","pages":"389-98"},"PeriodicalIF":0.0,"publicationDate":"1993-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0021-9673(93)80575-s","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19347370","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: 15

Chromatographic techniques used to determine benz[c]acridines in environmental samples. 用于测定环境样本中苯并[c]吖啶的色谱技术。

Journal of chromatography Pub Date : 1993-07-23 DOI: 10.1016/0021-9673(93)80535-g

N Motohashi, K Kamata, R Meyer

引用次数: 16

Comparison of the abundance of the fecal sterol coprostanol and fecal bacterial groups in inner-shelf waters and sediments near Sydney, Australia. 澳大利亚悉尼附近大陆架内水域和沉积物中粪便固醇、粪前列醇和粪便细菌群丰度的比较。

Journal of chromatography Pub Date : 1993-07-23 DOI: 10.1016/0021-9673(93)80552-j

P D Nichols, R Leeming, M S Rayner, V Latham, N J Ashbolt, C Turner

引用次数: 80

Study of polychlorinated dibenzodioxins and furans from municipal waste incinerator emissions in The Netherlands: analytical methods and levels in the environment and human food chain. 荷兰城市垃圾焚化炉排放的多氯二苯并二氮杂芑和呋喃的研究:环境和人类食物链中的分析方法和水平。

Journal of chromatography Pub Date : 1993-07-23 DOI: 10.1016/0021-9673(93)80544-i

A P de Jong, A K Liem, R Hoogerbrugge

引用次数: 32

Solid-phase extraction followed by high-performance liquid chromatographic analysis for monitoring herbicides in drinking water. 固相萃取-高效液相色谱法监测饮用水中除草剂。

Journal of chromatography Pub Date : 1993-07-23 DOI: 10.1016/0021-9673(93)80554-l

A Balinova

引用次数: 80

Application of solid-phase partition cartridges in the determination of fungicide residues in vegetable samples. 固相分割盒在蔬菜中杀菌剂残留量测定中的应用。

Journal of chromatography Pub Date : 1993-07-23 DOI: 10.1016/0021-9673(93)80572-p

A Di Muccio, R Dommarco, D Attard Barbini, A Santilio, S Girolimetti, A Ausili, M Ventriglia, T Generali, L Vergori

{"title":"Application of solid-phase partition cartridges in the determination of fungicide residues in vegetable samples.","authors":"A Di Muccio, R Dommarco, D Attard Barbini, A Santilio, S Girolimetti, A Ausili, M Ventriglia, T Generali, L Vergori","doi":"10.1016/0021-9673(93)80572-p","DOIUrl":"https://doi.org/10.1016/0021-9673(93)80572-p","url":null,"abstract":"Disposable, ready-to-use cartridges filled with a macroporous diatomaceous material are used to extract in a single step fungicide residues with dichloromethane from aqueous acetone extracts of vegetables. This procedure takes the place of some functions (such as separating funnel partition, drying over anhydrous sodium sulphate and clean-up) usually performed by separate steps in classical schemes. Fourteen fungicides (dichloran, vinclozolin, chlorthalonil, triadimefon, dichlofluanide, procymidone, hexaconazole, captan, folpet, ditalimfos, iprodione, captafol, pyrazophos and fenarimol) were determined using the described procedure with recoveries between 83 and 107% at spiking levels ranging for the different compounds from 0.04 to 0.40 mg/kg. Crops subjected to the described procedure included lettuce, strawberry, apple, yellow pepper and peach, and gave extracts containing a mass of co-extractives between 5 and 30 mg. Compared with classical schemes, the described procedure is simple, less labour intensive, allows parallel handling of several extracts and does not require preparation and maintenance of equipment. Troublesome emulsions such as those frequently observed in separating funnel partitioning do not occur.","PeriodicalId":15508,"journal":{"name":"Journal of chromatography","volume":"643 1-2","pages":"363-8"},"PeriodicalIF":0.0,"publicationDate":"1993-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0021-9673(93)80572-p","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19347367","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: 28

Pollutants in drinking water and waste water. 饮用水和废水中的污染物。

Journal of chromatography Pub Date : 1993-07-23 DOI: 10.1016/0021-9673(93)80547-l

H F Schröder

引用次数: 27

Determination of paraquat in rat brain by high-performance liquid chromatography. 高效液相色谱法测定大鼠脑中百草枯的含量。

Journal of chromatography Pub Date : 1993-07-23 DOI: 10.1016/0021-9673(93)80578-v

M T Corasaniti, G Nisticò

引用次数: 37

Re-evaluation of solid-phase adsorption and desorption techniques for isolation of trace organic pollutants from chlorinated water. 固相吸附和解吸技术分离氯化水中微量有机污染物的再评价。

Journal of chromatography Pub Date : 1993-07-16 DOI: 10.1016/0021-9673(93)80086-n

S Onodera, A Nagatsuka, T Rokuhara, T Asakura, N Hirayama, S Suzuki

{"title":"Re-evaluation of solid-phase adsorption and desorption techniques for isolation of trace organic pollutants from chlorinated water.","authors":"S Onodera, A Nagatsuka, T Rokuhara, T Asakura, N Hirayama, S Suzuki","doi":"10.1016/0021-9673(93)80086-n","DOIUrl":"https://doi.org/10.1016/0021-9673(93)80086-n","url":null,"abstract":"Amberlite XAD resin and activated carbon columns were tested for their abilities to concentrate trace organic pollutants in chlorinated water. Both XAD-2 and XAD-7 resin columns (20 ml) were capable of adsorbing about 30% of total organic halogen (TOX) present in 20 l of drinking water (pH 7) containing about 100 micrograms/l of TOX, whereas the carbon column (10 ml) adsorbed over 90% of TOX. The adsorption capacity of XAD-7 resin was found to be strongly dependent on the solution pH, as compared with those of XAD-2 and carbon adsorbents. Soxhlet and sonication extractions were also evaluated for their abilities to recover the adsorbed organics from the adsorbents, by measurements of TOX, chromatographable compounds and mutagenicity in the eluates. Soxhlet extraction gave higher recoveries than sonication, as measured with the above indices, but these differences were generally small (ca. 20%), with exception of the carbon extracts. The XAD-2 and XAD-7 extracts of drinking water also showed about 3-4 times higher mutagenic activity than the carbon extracts.","PeriodicalId":15508,"journal":{"name":"Journal of chromatography","volume":"642 1-2","pages":"185-94"},"PeriodicalIF":0.0,"publicationDate":"1993-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0021-9673(93)80086-n","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19352177","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: 7

Solid-phase extraction in multi-residue pesticide analysis of water. 固相萃取法在水中多残留农药分析中的应用。

Journal of chromatography Pub Date : 1993-07-16 DOI: 10.1016/0021-9673(93)80083-k

G Font, J Mañes, J C Moltó, Y Picó

引用次数: 156