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[某些蔬菜品种中重金属(铅、镉)的积累情况]

[Accumulation of heavy metals (Pb, Cd) in selected varieties of vegetables].

作者信息

Smigiel D

机构信息

Katedry i Zakładu Bromatologii Slaskiej Akademii Medycznej, Sosnowcu.

出版信息

Rocz Panstw Zakl Hig. 1994;45(4):279-84.

PMID:7792516
Abstract

Vegetables have a great share in supplying of lead and cadmium with food into the human organism. For this reason an attempt was undertaken for quantitative evaluation of accumulation of those metals in three varieties of the following vegetables: carrots, parsley, garden beet, cabbage and potato grown at identical fertilization, weather conditions and pollution. Cadmium and lead were complexed with diethyldithiocarbamate, extracted into organic phase, and determined using atomic absorption spectrometry method. Cadmium content in tested vegetables was close to allowed values, established by Polish Legislation for these foods stuffs, and even exceeded limits in many specimens. Lead content is lower than allowed values with exception of one variety of carrot and all parsley specimens (leaf). Statistically significant differences (t-Student test) in the content of lead and cadmium in different varieties of the same vegetable were not observed. However, the minimum content of both metals in cultivated vegetables was observed in the following vegetables: parsley, carrot (three varieties), red beet (two varieties), potato, cabbage (two varieties).

摘要

蔬菜在通过食物向人体输送铅和镉方面占很大比重。因此,人们尝试对以下三种蔬菜品种(胡萝卜、欧芹、甜菜、卷心菜和土豆)在相同施肥、天气条件和污染情况下这些金属的积累量进行定量评估。镉和铅与二乙基二硫代氨基甲酸盐络合,萃取到有机相中,并采用原子吸收光谱法进行测定。受试蔬菜中的镉含量接近波兰法律为这些食品设定的允许值,甚至在许多样本中超过了限值。铅含量低于允许值,但有一种胡萝卜品种和所有欧芹样本(叶)除外。在同一蔬菜的不同品种中,未观察到铅和镉含量存在统计学上的显著差异(t检验)。然而,在所种植蔬菜中,以下蔬菜中这两种金属的含量最低:欧芹、胡萝卜(三个品种)、红甜菜(两个品种)、土豆、卷心菜(两个品种)。

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