Methods of isolation and determination of volatile organohalogen compounds in natural and treated waters

Biziuk, Marek; Przyjazny, Andrzej

doi:10.1016/0021-9673(95)01268-0

Cited by 37 publications

(11 citation statements)

References 227 publications

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“…They have been used as solvents, cleaning and degreasing agents, polymerization modifiers, and heat-exchange fluids (6). This group of compounds includes several suspected carcinogens; for example, tetrachloroethylene has been classified as probable human carcinogen (class 2A) by the International Agency for Research on Cancer (7,8).…”

Section: Introductionmentioning

confidence: 99%

Development of an environmentally friendly methodological approach to determine chlorinated hydrocarbons and chlorobenzenes in soils

Casas-Ferreira

Laespada

Pavón

et al. 2014

Green Chemistry Letters and Reviews

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A modified version of the quick, easy, cheap, efficient, rugged, and safe method is proposed for the determination of chlorinated pollutants in soil samples. Measurements were collected using a programmed temperature vaporizer coupled to a gas chromatograph and a µ-electron capture detector. The optimization and validation of this extraction technique for these compounds in soils have been performed in order to provide an alternative tool for determining these kinds of pollutants in soils. Advantages over conventional extraction techniques include the applicability to compounds of very different volatilities and polarities, the low cost of the reagents employed, and the possibility of being used by nonspecialist operators, with standard analytical tools. This method can be considered more environmentally friendly, due to the reduction of solvent and energy consumption and to the elimination of harmful organic solvents, reducing the negative impact of chemical analyses on the environment (principles of green analytical chemistry).

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Section: Introductionmentioning

confidence: 99%

Development of an environmentally friendly methodological approach to determine chlorinated hydrocarbons and chlorobenzenes in soils

Casas-Ferreira

Laespada

Pavón

et al. 2014

Green Chemistry Letters and Reviews

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“…Among the adsorbent materials available for SPE of pollutants from water, octadecyl bonded silica (Cls) has become the most popular. Different SPE formats are available, mainly disposable cartridges and membrane disks [4]. For solid-phase extraction of organochlorine pesticides in this work we tested new Cls laminar disks, which consist of a thin bed of microparticles supported in a laminar structure in a pre-assembled disk.…”

Section: Introductionmentioning

confidence: 99%

Troubleshooting in the trace analysis of organochlorine pesticides in water samples

et al. 2001

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SummaryAs a consequence of the high toxicity of organochlorine pesticides their presence in water for human consumption is limited by legislation. To determine these compounds at trace levels, an extraction procedure and a highly sensitive analytical technique is necessary. In this workwe have used laminar disks for the solid-phase extraction of 21 organochlorine pesticides from water. The analytical technique selected is gas chromatography with electron-capture detection. A solid-phase extraction procedure is proposed, and some problems has been encountered. Low recovery of some pesticides has been obtained, because of their adsorption by the walls of containers. To prevent this adsorption, addition of 20% methanol before the sampling step is proposed. Adsorption of pesticides by the organic matter present in water samples was also observed. Pesticides can be adsorbed by the membrane filters usually used to remove suspended particulate matter from water samples. Different kinds of filters have been tested, and the occurrence of the problem has been confirmed. The use of laminar disks in this work has overcome this problem.

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“…4 Análises de resíduos de agrotóxicos em água são difíceis de serem executadas, uma vez que esses compostos possuem diferentes propriedades físico-químicas e ocorrem em concentrações extremamente baixas na presença de altas concentrações de compostos interferentes. 3 De acordo com Biziuk e Przyjazny, 5 os passos envolvidos na análise de agrotóxicos são: amostragem, pré-tratamento das amostras, medida e tratamento dos dados. A determinação de resíduos de agrotóxicos, nas mais diferentes matrizes, é tradicionalmente realizada utilizando-se técnicas cromatográficas, em função de sua capacidade de separação, identificação e quantificação dos compostos através de detectores apropriados.…”

Section: Introductionunclassified

Principais técnicas de preparo de amostra para a determinação de resíduos de agrotóxicos em água por cromatografia líquida com detecção por arranjo de diodos e por espectrometria de massas

et al. 2011

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Methods of isolation and determination of volatile organohalogen compounds in natural and treated waters

Cited by 37 publications

References 227 publications

Development of an environmentally friendly methodological approach to determine chlorinated hydrocarbons and chlorobenzenes in soils

Development of an environmentally friendly methodological approach to determine chlorinated hydrocarbons and chlorobenzenes in soils

Troubleshooting in the trace analysis of organochlorine pesticides in water samples

Principais técnicas de preparo de amostra para a determinação de resíduos de agrotóxicos em água por cromatografia líquida com detecção por arranjo de diodos e por espectrometria de massas

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