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Download Decontamination of Pesticide Residues in the Environmental: by G. K. Kohn (auth.), Francis A. Gunther (eds.) PDF

By G. K. Kohn (auth.), Francis A. Gunther (eds.)

That residues of pesticide and different "foreign" chemical compounds in nutrition­ stuffs are of shock to every person all over the place is abundantly attested through the reception accorded prior volumes of "Residue experiences" and via the enjoyable enthusiasm, sincerity, and efforts proven via all of the in­ dividuals from whom manuscripts were solicited. regardless of a lot propaganda on the contrary, there can by no means be any severe query that pest-control chemical compounds and food-additive chemical substances are necessary to enough nutrients construction, manufacture, advertising, and garage, but with no carrying on with surveillance and clever keep an eye on a few of those who persist in our foodstuffs may every now and then conceivably endanger the general public wellbeing and fitness. making sure safety-in-use of those many chemical compounds is a dynamic problem, for tested ones are always being dis­ positioned through newly constructed ones extra appropriate to meals tech­ nologists, pharmacologists, toxicologists, and altering pest-control requisites in innovative food-producing economies. those concerns are of actual trouble to expanding numbers of governmental firms and legislative our bodies world wide, for a few of these chemical substances have led to a number of mishaps from flawed use. enough safety-in-use reviews of any of those chemical compounds consistent with­ sisting into our foodstuffs aren't uncomplicated issues, and so they contain the thought of judgments of many people hugely expert in quite a few advanced organic, chemical, nutrients technological, scientific, pharmacological, and toxicological disciplines.

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Additional resources for Decontamination of Pesticide Residues in the Environmental: Atlantic City Meetings of the American Chemical Society September 1968

Example text

42 a) Laboratory applied pesticide removal .......................... 42 b) Field-weathered pesticide removal ............................. 45 c) Effect of temperature of wash solution on pesticide removal ...... 46 Summary ......................................................... 47 Resume ........................................ ······............ 48 Zusammenfassung ..................................... . . . . . 48 References ...........................................

The results for the almond hull meal are shown in Table XIV. When the treatment solutions consisted of water, 63 percent of the Kelthane residue was removed; ethyl alcohol, 97 percent was removed; sodium ethoxide in water, 81 percent was removed; sodium ethoxide in ethyl alcohol, sodium methoxide in ethyl alcohol, and potassium hydroxide in ethyl alcohol removed 100 percent of the Kelthane. In all cases 4,4'-D residues were detected on the treated plant material. When the 4,4'-D residues were converted to Kelthane and added to the Kelthane residue detected after treatment, total residues removed from the plant material by the treatment were 41, 96, 45, 88, 91, and 87 percent, respectively, as discussed above.

The sum of the residues in the vapor-treated plant material and those in the condensates for each organic solvent was essentially equal to the residues on the starting material. The condensates from the water vapor which had passed through the hay were analyzed, but very little pesticide was found. Other workers (BOWMAN et al. 1959) have found that DDT very readily codistills with water, and loss from the receiver despite its low temperature may account for the poor recovery of the pesticides in the water vapor experiments.

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