为了解广东省竹笋土壤重金属污染现状和来源,在46个地点共收集了175个土壤样本。用原子荧光分光光度计和电感耦合等离子体质谱法测定五种重金属的含量:铅(Pb),镉(Cd),砷(As),汞(Hg),铬(Cr)。此外,通过不同的指数方法对土壤环境质量进行评价,包括单因素污染,内梅罗全面污染,地质累积,和潜在的生态风险。此外,还讨论了相关系数。结果表明,收集的土壤呈酸性或微碱性。部分地区Pb和As的最大含量超过标准限值。六个地区的变异系数值超过100%。上述指数法证实,研究区域内的土壤被分为三个污染水平:稍微,温和。此外,pH值与Pb之间存在非常显著的相关性,重金属As和Pb的相关性,Cr也到达了非常显著的程度。主成分分析结果表明,PC1占总方差的39.60%,其中包括Pb,Cd,和作为。PC2主要包括Hg和Cr。
In order to investigate the pollution situation and sources analysis of heavy metals in bamboo shoot soil in Guangdong Province, a total of 175 soil samples were collected at 46 sites. Atomic fluorescence spectrophotometer and inductively coupled plasma mass spectrometry were used to determine the content of five heavy metals: lead (Pb), cadmium (Cd), arsenic (As), mercury (Hg), and chromium (Cr). In addition, the soil environmental quality was evaluated through different index methods, including single-factor pollution, Nemeiro comprehensive pollution, geoaccumulation, and potential ecological risk. Furthermore, the correlation coefficients were also discussed. The results showed that the soils collected were acidic or slight alkaline. The maximum content of Pb and As from some areas exceeded the standard limit value. The coefficient of variation value from six areas exceeded 100%. The index method mentioned above confirmed that the soil within study areas was divided into three pollution levels: no, slightly, and mild. Additionally, there was a very significant correlation between pH and Pb, Hg; the correlation between heavy metal As and Pb, Cr also reached a very significant level. The principal component analysis results show that PC1 accounts for 39.60% of the total variance, which includes Pb, Cd, and As. PC2 mainly includes Hg and Cr.