Shcheglova I Iu, Golenkov V F
Vopr Pitan. 1984 Jul-Aug(4):60-3.
The authors studied the possibility of determining lead and cadmium in wheat grain by polarography in the presence of O. 1 N hydrochloric acid. The determination of lead and cadmium in the grain can be performed with the use of the addition method and the calibrating curve. However, during cadmium determination, the calibrating curve provides more reproducible results. Altogether 100 samples of wheat grown in different regions of the European part of the USSR were analyzed by polarography. The data obtained indicate that the content of lead and cadmium in wheat grain does not depend on the region where that culture was grown. It amounts to 0-0.2 micrograms/g for lead and 0-0.04 micrograms/g for cadmium for the majority of samples. If the content of these elements is higher than the amounts indicated, there is every reason to suggest that in this region there are sources of grain contamination with lead and cadmium.
作者研究了在0.1N盐酸存在下，用极谱法测定小麦籽粒中铅和镉的可能性。籽粒中铅和镉的测定可采用加入法和校准曲线法。然而，在镉的测定过程中，校准曲线能提供更可重复的结果。共对苏联欧洲部分不同地区种植的100个小麦样品进行了极谱分析。所得数据表明，小麦籽粒中铅和镉的含量并不取决于种植该作物的地区。大多数样品中铅的含量为0 - 0.2微克/克，镉的含量为0 - 0.04微克/克。如果这些元素的含量高于上述所示量，则完全有理由认为该地区存在铅和镉污染谷物的源头。
