Sorptive extraction techniques in sample preparation for organophosphorus pesticides in complex matrices

Chen, Jie; Duan, Chunfeng; Guan, Yafeng

doi:10.1016/j.jchromb.2010.02.031

Cited by 54 publications

(34 citation statements)

References 91 publications

(92 reference statements)

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“…Among pesticides, OPs compounds are more than 100 widely used in agricultural chemicals (Suratman, Edwards, & Babina, 2015). This popularity is largely contributed to their favourable characteristics such as biodegradable and short persistence compared to the OC pesticides (Chen et al, 2010). They are sprayed over crops or soils, causing residues to be found in surface and ground waters, fruits, vegetables and in drinking water (Yao et al, 2001).…”

Section: Pesticide Induces Male-mediated Reproductive Toxicitymentioning

confidence: 99%

Pesticide Exposures Induce Male-Mediated Reproductive Toxicity: A Review

Yusoff¹,

Budin²,

Taib³

2017

JAS

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Infertility remains a continuing globally problem wherever couples worldwide were infertile as much as 42 million in 1990 and keep projecting to 48.5 million in 2010. Male-mediated infertility becomes one of the numerous concerns due to pesticide especially sperm quality as revealed with raising number of animal and human studies in latter-day among researchers. Pesticides have been used since the early days as pest control in agriculture, as vector controls in malaria and dengue as well as subject to much regulation. The reproductive system might be affected with some negative effects from pesticides that lead to interference with the male hormonal function. Polyunsaturated fatty acid (PUFA) content in the sperm cell membrane makes it become highly susceptible towards reactive oxygen species (ROS), thus leading to sperm damage. Besides known genetic and environmental factors, research during the last two decades has highlight on several mechanisms and their association with male infertility. The male germ line undergoes extensive epigenetic modifications throughout fetal to adult life hence vulnerable to environmental factors that may influence fertility. The present literature will help in understanding the mechanisms of pesticide in inducing male-mediated reproductive toxicity.

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Section: Pesticide Induces Male-mediated Reproductive Toxicitymentioning

confidence: 99%

Pesticide Exposures Induce Male-Mediated Reproductive Toxicity: A Review

Yusoff¹,

Budin²,

Taib³

2017

JAS

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“…• São necessárias etapas adicionais de cleanup e concentração do extrato impregnado com esse material [27] , percolação da amostra/sorção dos analitos no sorvente, lavagem do sorvente para remoção dos interferentes (clean-up), eluição dos analitos, utilizando-se solventes orgânicos adequados, e posterior concentração dos compostos de interesse, quando necessário, para submetê-los a análise instrumental [26,28] . Os extratos obtidos, na maioria das vezes, são analisados por cromatografia líquida (Liquid Chromatography -LC) ou por cromatografia gasosa (Gas Chromatography -GC) [29] , acopladas a um detector apropriado.…”

Section: Extração Em Fase Sólidaunclassified

“…A técnica baseia-se na sorção dos analitos em uma fibra de sílica fundida quimicamente modificada, revestida por um filme de material sorvente, como poli(dimetilsiloxano), poliacrilato, MIP, entre outros, e na dessorção deles em uma fase líquida, para análise por cromatografia líquida ou na dessorção térmica no injetor de um cromatógrafo a gás, sendo essa última mais comum e ambientalmente correta, já que elimina completamente o uso de solventes orgânicos [29,42] . Existem dois modos principais de operação em SPME: a extração direta e a extração via headspace (HS-SPME).…”

Section: Microextração Em Fase Sólidaunclassified

Técnicas de preparo de amostra empregadas na determinação de agrotóxicos carbamatos em água e solo

Morais¹,

Begnini²,

Jardim³

2013

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ResumoAtualmente, dentre os diferentes tipos de agrotóxico aplicados na agricultura, os carbamatos têm se destacado em virtude de sua elevada eficiência, facilidade de síntese e baixo custo. No entanto, o uso desregrado desses agrotóxicos, não seguindo as Boas Práticas Agrícolas (BPA), tem levado à contaminação do meio ambiente, destacando-se o acúmulo desses compostos nas águas superficiais (rios e lagos), subterrâneas e no solo. Além disso, muitos desses agrotóxicos são tóxicos para os seres vivos, principalmente por inibirem a ação de enzimas biológicas, como as colinesterases. Nesse contexto, o monitoramento de resíduos de agrotóxicos no solo e nas águas tornou-se imprescindível para a redução do impacto ambiental e aumento da segurança da saúde humana e animal, sendo realizado através da confirmação e quantificação desses resíduos, empregando-se diferentes técnicas analíticas. As técnicas de preparo de amostra mais empregadas e modernas para determinação analítica de resíduos de agrotóxicos carbamatos serão abordadas neste artigo. Palavras-chavePreparo de amostra; carbamatos; água; solo. Sample preparation techniques for determination of carbamate pesticides in water and soil AbstractCurrently, among the several kinds of pesticides employed in agriculture, carbamates have been widely used because of their high efficiency, ease of synthesis and low cost. However, the unjudicious use of these pesticides, not following Good Agricultural Practices, can have adverse effects on the environment, especially the accumulation of these compounds in surface waters (rivers and lakes), groundwater and soil. Furthermore, many of these pesticides are toxic to humans and animals, mainly due to their inhibition of enzymes, like cholinesterases. In this context, the monitoring of pesticide residues in soils and waters has become essential to reduce the environmental impact and improve the safety of human and animal health, being performed through the confirmation and quantification of these residues, employing different analytical techniques. The most frequently used techniques and modern sample preparation for analytical determination of carbamate pesticide residues will be discussed in this paper.

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“…To have simple, fast and green procedures microextraction techniques are developed. Solid-phase microextraction (SPME), stir bar sorptive extraction (SBSE) and microextraction with packed sorbents (MEPS) are examples that are used for sample preparation of pesticide residues containing food matrices (Chen et al, 2010). It was shown by several authors (Ochiai et al, 2005, Barriada-Pereira et al, 2010, that using SBSE technique allows batch sample preparation, for example 60 samples on one stir-plate, (typically in minutes (up to 60 min)), high recovery and extremely low LODs at sub ng.l -1 .…”

Section: Sample Preparation In Food Samples Analysis By Fast Gcmentioning

confidence: 99%