منابع مشابه
Environmental Fate of Propargite
Air: Propargite has very negligible vapor pressure (3.89 x 10 mmHg); therefore, it is not readily volatilized into the atmosphere. The low Henry’s law constant, <9.43 x 10 atmmg.mol at 25C, indicates that propargite is unlikely to volatilize into air from an aqueous solution (Lyman, et al., 1982). Aside from drift that is generated by spray applications, propargite is not expected to be found i...
متن کاملDissipation Behavior of Fenpyroximate Residues in Black Tea and Brew
Fenpyroximate is an effective acaricide on several food crops. In the present study, dissipation of residue of this acaricide in black tea, tea infusion and spent tea was studied. Analysis was carried out using high performance liquid chromatography with diode array detection. The rate of dissipation was found to vary with the nature of the substrate. In tea leaves the half-life of fenpyroximat...
متن کاملEstimated assessment of cumulative dietary exposure to organophosphorus residues from tea infusion in China
BACKGROUND China has the world's largest tea plantation area in the world. To sustain high yields of the tea, multiple pesticides are used on tea crops to control pests. Organophosphorus (OP) pesticides are among the most widely used types of agricultural pesticides in China. As tea is a significant potential source of exposure to pesticide residues, the public concern has increased in relation...
متن کاملHigh-performance thin-layer chromatographic analysis of selected organophosphorous pesticide residues in tea.
The separation of 9 organophosphates (monocrotophos, quinalphos, triazophos, parathion-methyl, isofenphos-methyl, temephos, parathion, phoxim-ethyl, and chlorpyrifos) by high-performance thin-layer chromatography (HPTLC) with automated multiple development was studied. The HPTLC method was developed and validated for analysis of residues of phoxim-ethyl and chlorpyrifos in tea. The sample was e...
متن کاملSimultaneous determination of procymidone, pyridaben and beta-cypermethrin residues in tea solution by GC-ECD.
A sensitive and effective method for the simultaneous quantitative determination of procymidone, pyridaben and beta-cypermethrin residues in tea solutions was developed and validated using a gas chromatograph (GC) equipped with an electron capture detector (ECD). The analysis of the three pesticides in tea solutions involved extraction with petroleum ether-ethyl acetate (3:1, v/v), cleanup usin...
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ژورنال
عنوان ژورنال: International Journal of Agricultural Science and Food Technology
سال: 2015
ISSN: 2455-815X
DOI: 10.17352/2455-815x.000004