广西某铅锌矿区农用地铅镉富集效应及农产品质量安全研究
农泽喜 1郭尚其 1马荣锴 1唐茜 1曾德华 1张之才1
作者信息
- 1. 中国有色桂林矿产地质研究院有限公司,广西 桂林 541004;广西环境污染控制理论与技术重点实验室,广西 桂林 541004
- 折叠
摘要
为了解广西某铅锌矿区农用地土壤铅镉污染情况及其与农产品质量安全的影响关系,共采集土壤、农产品样品 441 件,采用正态分布、T检验等统计学手段进行分析并拟合建立土壤-农产品铅镉相关关系预测模型.结果表明,研究区农用地土壤铅、镉超标率分别为 55.06%和 84.23%,T检验结果显示土壤中铅、镉均为显著累积(P=0.000);水稻中铅、镉含量超标率分别为 13.6%和59.09%,玉米中铅超标率为 17.4%、镉含量未超标,柑橘中铅、镉含量均未超标,正态分布分析结果显示水稻中的镉、玉米中的铅含量均呈正态分布;土壤镉含量与水稻镉含量具有显著的相关性,其相关关系预测模型为y=2.562 5x2-0.754 1x+0.412 2(R2=0.89).
Abstract
In order to deal with the relationship between lead and cadmium pollution of soil and the quality safety of agricultural products in a lead-zinc mining area in Guangxi,441 samples of soil and agricultural products were collected.Statistical methods such as normal distribution and T-test were used to analyze and fit to establish the prediction model of lead-cadmium relationship between soil and agricultural products.The results showed that the over-standard rates of lead and cadmium in agricultural land in the study area were 55.06%and 84.23%,respectively.The results of T-test showed that both lead and cadmium in the soil were significantly accumulated(0.000).The over-standard rate of lead and cadmium in rice was 13.6%and 59.09%respectively,the lead content in corn was 17.4%,and the content of cadmium in citrus did not exceed the standard.the results of normal distribution analysis showed that the content of cadmium in rice and lead in corn showed normal distribution.There was a significant correlation between soil cadmium content and rice cadmium content,and the correlation prediction model was y=2.562 5x2-0.754 1x+0.412 2(R2=0.89).
关键词
铅锌矿区/铅镉/农用地污染/农产品/质量安全Key words
lead-zinc mining area/lead and cadmium/agricultural land pollution/agricultural product/quality safety引用本文复制引用
基金项目
广西壮族自治区科技重大专项(桂科AA17204047-1)
出版年
2024
国家科技期刊平台
NSTL
万方数据