[Objective] This study was conducted to investigate the pollution degrees of heavy metals in potato and estimate the risk to human health. [Method] The pollution distribution of 7 heavy metals total As, Hg, Cd, Pb, Cr...[Objective] This study was conducted to investigate the pollution degrees of heavy metals in potato and estimate the risk to human health. [Method] The pollution distribution of 7 heavy metals total As, Hg, Cd, Pb, Cr, Ni and Cu in potato was analyzed by monitoring heavy metals in potato samples in Inner Mongolia. [Result] Residual heavy metals in potato in producing areas in Inner Mongolia satisfied national limit standards, and comprehensive heavy metal pollution index was smaller than 0.7, belonging to the safe grade. Among the 7 heavy metals, Pb and Cr pollution was relatively heavier, and contributed more to the comprehensive pollution index. The THQ values and the TTHQ value of the 7 heavy metals were all lower than 1, indicating that pollution of heavy metals in potato in Inner Mongolia caused no remarkably risk to human health. Among the 7 heavy metals, Cr content contributed the most to risk to human health, and the risk caused by Cr intake through potato was higher than that caused by other heavy metals. In different sampling regions, there were differences in risk of heavy metals in potato to human health. [Conclusion] This study provides an objective scientific basis for management of quality safety risk of potato.展开更多
为明确欧洲葵螟Homoeosoma nebulellum Denis et Schiffermüller寄主选择的物理机制,通过对14个向日葵品种(系)筒状小花及瘦果的形态指标观察,采用籽粒被害虫情指数进行田间寄主选择性试验,研究了向日葵的形态性状和欧洲葵螟寄主...为明确欧洲葵螟Homoeosoma nebulellum Denis et Schiffermüller寄主选择的物理机制,通过对14个向日葵品种(系)筒状小花及瘦果的形态指标观察,采用籽粒被害虫情指数进行田间寄主选择性试验,研究了向日葵的形态性状和欧洲葵螟寄主选择的关系。欧洲葵螟对不同向日葵品种(系)具有明显的选择性,且对食葵品种(系)的选择性均显著高于油葵品种(系)。食葵瘦果多为中长或长形(≥1.5cm),油葵瘦果则属于短或特短形(<1.5 cm)。向日葵各形态指标在不同品种(系)间均存在极显著差异,食葵的花盘直径、筒状小花开口、子房壁厚度、瘦果果壁厚度、瘦果果壁茸毛密度均大于油葵,且各指标与籽粒被害虫情指数之间、各指标互相之间也均呈显著正相关关系。表明选育较小花盘的向日葵品种(系)可减少葵螟对向日葵的为害。展开更多
基金Supported by Science and Technology Application Planning Project of Inner Mongolia(2014KJ0610)Innovation Fund of Inner Mongolia Academy of Agriculture and Animal Husbandry Sciences(2014CXJJN01)Youth Innovation Fund of Inner Mongolia Academy of Agriculture and Animal Husbandry Sciences(2014QNJJN04)~~
文摘[Objective] This study was conducted to investigate the pollution degrees of heavy metals in potato and estimate the risk to human health. [Method] The pollution distribution of 7 heavy metals total As, Hg, Cd, Pb, Cr, Ni and Cu in potato was analyzed by monitoring heavy metals in potato samples in Inner Mongolia. [Result] Residual heavy metals in potato in producing areas in Inner Mongolia satisfied national limit standards, and comprehensive heavy metal pollution index was smaller than 0.7, belonging to the safe grade. Among the 7 heavy metals, Pb and Cr pollution was relatively heavier, and contributed more to the comprehensive pollution index. The THQ values and the TTHQ value of the 7 heavy metals were all lower than 1, indicating that pollution of heavy metals in potato in Inner Mongolia caused no remarkably risk to human health. Among the 7 heavy metals, Cr content contributed the most to risk to human health, and the risk caused by Cr intake through potato was higher than that caused by other heavy metals. In different sampling regions, there were differences in risk of heavy metals in potato to human health. [Conclusion] This study provides an objective scientific basis for management of quality safety risk of potato.
