نتایج جستجو برای: pesticide residues
تعداد نتایج: 97575 فیلتر نتایج به سال:
Over 800 pesticides are currently approved for use in one or more EU countries. The maximum residue levels (MRL) for agricultural pesticides are derived from field trials conducted under good agricultural practice (GAP). The MRL is a legally enforceable limit related to GAP. The results from field trials would only be used to establish MRLs if the estimated intake of residues did not exceed the...
The paper examines preferences for product quality regulations. Our premise is that preferences for product quality regulations derive from preferences for both private and public goods. The model is used to explain public attitudes toward a referendum measure to eliminate pesticide residues on food. Results from a survey of consumers are consistent with the conceptual model and show that prefe...
x REVIEW OF LITERATURE
for the first time, a multi-residue methodfor simultaneous determination of 41lc-amenable pesticides in rice, belonging to different chemical classes has been developed in iran by lc-ms/ms. the pesticides were analyzed simultaneously in a single run using positive electrospray ionization with multiple reaction monitoring (mrm) after extraction with slightly modified quechers method. the calibra...
In practice, pesticides are usually applied simultaneously or one after another for crop protection, and this type of pesticide application often leads to a combined contamination of pesticide residues in the soil environment. A laboratory study was conducted to investigate the influence of chlorothalonil on chlorpyrifos degradation and its effects on soil bacterial, fungal, and actinomycete po...
Stored product insects cause millions of dollars per year in losses in stored wheat. Traditionally, storedproduct pest management has relied on chemicals to control insects. In some cases, pest management has been improved by applying chemicals only when needed. An increasing effort is being made to reduce or eliminate pesticide residues in the food supply. This trend has increased since the in...
This article summarizes research findings involving the supercritical fluid extraction (SFE) of pesticides in food and other tissue matrices. Emphasis is placed on multiresidue analysis of pesticides in nonfatty foods, including some previously unpublished aspects of SFE in this application. Brief overviews of pesticides and traditional multiresidue methods are given, followed by discussion of ...
The utilization of organochlorine pesticides for pest control chemical has been of great interest on residue contamination from biological organisms in the environment. Green mussel (Perna viridis) samples were monitored as bioindicators for assessment of the water quality in coastal waters along the Gulf of Thailand. Thirty-six samples were collected from 12 stations during 1997-1999 and analy...
Considerable economic losses to harvested fruits are caused by postharvest fungal decay during transportation and storage, which can be significantly controlled by synthetic fungicides. However, considering public concern over pesticide residues in food and the environment, there is a need for safer alternatives for the control of postharvest decay to substitute synthetic fungicides. As the sec...
A collaborative study involving 8 laboratories was conducted to evaluate a method for the simultaneous determination of pesticide residues in 6 types of fruits and vegetables (spinach, tomato, apple, radish, cabbage and carrot). The method of analysis was the same as reported by Kakimoto et al. in 2003. One hundred and thirty-nine pesticides were spiked by each of 8 laboratories at levels of 0....
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