Determination of impurities of arsenic, cadmium and lead in sulphur and copper compounds used as pesticides Ayman S.M. Hassan*, Ibrahim E.M.M. Attalla, Attalla
Language: English Summary language: Arabic Description: p.63-74Other title:- تقدير الزرينخ و الكادميوم و الرصاص كشوائب في مركبات النحاس و الكبريت المستحدمة كمبيدات [Added title page title]
- Journal of the advances in agricultural researches, 2011 v. 16 (1) [electronic resource].
Includes references.
A bunch of sulphur (32 compounds) and copper (53 compounds) used as pesticides compounds were tested to determine their impurities of arsenic, cadmium, and lead. Arsenic concentrations in sulphur ranged from 0.0010 to 0.5467 1l9/g with an average of 0.4225 1l9/9, while they ranged from 0.0001 to 0.6010 1l9/g with and average of 0.2098 119/9 in copper compounds. The maximum allowed arsenic limit in sulphur is 0.5 1l9/9, while in copper compounds is 0.1Ilg/g. In sulphur compounds cadmium ranged from 0.0025 to 0.173 with an average of 0.0298 1l9/9, while in copper compounds that range was 0.0002 to 0.6010 119/9 with an average of 0.19068 1l9/9. The maximum allowed limit (MAL) of cadmium in copper compounds is 0.1 1l9/9. Sulphur compounds contained 0.0187-0.7435 119/9 lead with an average of 0.2861 119/9. The range of lead in copper compounds was 0.0014 - 0.9964 119/9 and the average was 0.5798 1l9/9. The maximum allowed limit of lead in copper compounds is 0.5 Ilg/9. Some of the tested sulphur and copper pesticides were found to contain higher impurities than MAL. Nineteen samples of copper compounds out of 53 compounds were found to contain higher impurities of lead than (Pb) more than MAL.
Summary in Arabic.
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