Study on the Extraction Efficiency and Recovery Rate of Heavy Metal Available Forms in Soil Under Different Conditions
This study aims to investigate the effects of different experimental conditions(particle size,extractant,standard curve matrix solution,extraction time after spiking,and soil type)on the extraction efficiency and recovery rate of heavy metal available forms in soil.A series of experiments were designed to comparatively analyze the ex-traction efficiency and recovery rate under different conditions,aiming to provide theoretical basis and practical guidance for the treatment of soil heavy metal pollution.The results showed that the extraction effect of soil with 10 mesh particle size was the best,followed by 60 mesh,and 100 mesh was relatively poor;HCl was the best extrac-tant,followed by DTPA,and CaCl2 hardly had any effect;the curve matrix should match the corresponding matrix solution to reduce test interference;for the extraction time after spiking,the later the extraction time,the worse the recovery effect;for different soil types,the spiked recovery rate was the best in sandy soil,second in loamy soil,and the worst in clayey soil.
soilheavy metal available formsextraction efficiencyspiked recovery rate
万方数据
维普
