尿石元素成分的原子吸收光谱分析

Determination of Elements in Urinary Calculi by Atomic Absorption Spectrophotometry

本文采用火焰原子吸收光谱法定量测定了24例尿石的钾、钠、钙、镁,锌和铁的含量,并对其中的20例结石进行了表层和内层的分层分析。结果显示原子吸收光谱法能满意地测定这些元素,含量分别为0.33、0.329、20.765、0.216、0.094和0.088％,以草酸盐,磷酸盐及尿酸盐为主的三类混合结石的元素含量无明显差异,表层和内层亦无明显差异。

The contents of potassium, sodium, calcium, magnesium, zinc and iron in 24 urinary calculi were determined by flam atomic absorption spcctrophotometry. The contents of surface and internal elements in 20 stones were measured. The results indicated that satisfactory results could be obtained by use of atomic absorption spcctrophotometry. The levels of these elements averaged 0.033, 0.329, 20.765, 0.216, 0.094 and 0.088% respectively. The differences in values of these elements were not significant among three kinds of mixed stones containing mainly oxa-late, phosphate and urate, and between the surface and internal stones. The results support that urinary stone formation is caused by deposits of stone compositions. The advantages and disadvantages of atomic absorption spectrophotometry were also discussed.