使用 Agilent 4200 微波等离子体原子发射光谱仪直接测定经氢氟酸消解的土壤中的 Cu、Fe、Mn、P、Pb 和 Ti

Accurate elemental analysis of soils is extremely important for numerous reasons. Lead and cadmium are known for their adverse health and environmental effects. Phosphorus, copper, iron, magnesium are considered important macro and micro nutrients for plants and thus, these elements are of interest for agricultural science, crop selection and soil remediation studies. Titanium minerals in soil are also used as weathering indicators [1]. Laboratories that analyze soil and rock samples must use hydrofluoric acid (HF) during sample preparation to ensure complete dissolution, especially where silicate based minerals may be present. Standard glass sample introduction systems are not suitable for the introduction of HF digests unless the samples are neutralized prior to analysis as the free HF attacks and degrades the glass a nd quartz components. Unfortunately, the HF neutralization step reduces laboratory efficiency and introduces a potential source of contamination. Therefore, laboratories that routinely analyze samples prepared using HF digests prefer to work with