中国农学通报2025，Vol.41Issue(32)：30-35,6.
直接测汞法探索汞在水稻植株不同组织部位的分布特征
Exploring Distribution Characteristics of Mercury in Different Tissues of Rice Plants by Direct Mercury Measurement Method
卢克贵 1邢怡晨 1王畅 2陈晓萍 3刁春霞1
作者信息
- 1. 泰州市疾病预防控制中心,江苏 泰州 225300
- 2. 姜堰区疾病预防控制中心,江苏 泰州 225500
- 3. 兴化市疾病预防控制中心,江苏兴化 225700
- 折叠
摘要
Abstract
The objective of this study is to establish an efficient and rapid method for directly measuring mercury(Hg)content in rice and to investigate the distribution characteristics of Hg in four different tissue parts of rice plants.Roots,stems,and grains(including husk and brown rice)from the same rice plants were used as test materials.After drying and pulverizing,Hg was determined by direct mercury analyzer with external standard quantification.The results showed that the direct mercury analysis method exhibited excellent linearity(correlation coefficient R=0.9999),with a detection limit of 0.064 μg/kg,precision ranging from 1.8%to 3.2%,and spike recovery rates between 103%and 109%;significant differences in Hg content were observed among different rice tissues,with an overall distribution pattern of root>stem>husk>brown rice,forming a three-stage distribution pattern of"root-stem-grain";positive correlations were found between Hg content in soil and various rice tissues(correlation coefficients ranging from 0.329 to 0.693).The established direct mercury analyzer method eliminates complex sample pretreatment processes while maintaining simplicity,rapidity,and accuracy,making it suitable for Hg detection in rice.The distribution of Hg in different tissues of rice is significantly different.For Hg-contaminated areas,the risk of Hg accumulation in rice can be reduced by regulating soil Hg activity(such as applying modifiers)and screening low-enrichment varieties,so as to guide grain production and environmental governance.关键词
直接测汞法/水稻/不同组织部位/Hg元素/分布特征/富集能力Key words
direct mercury analyzer method/rice/different tissue parts/mercury element/distribution characteristics/enrichment capacity分类
农业科技引用本文复制引用
卢克贵,邢怡晨,王畅,陈晓萍,刁春霞..直接测汞法探索汞在水稻植株不同组织部位的分布特征[J].中国农学通报,2025,41(32):30-35,6.
