N_2O—C_2H_2火焰原子吸收法测定土壤中痕量铍和钒

Determining Trace Amount of Berylliumand Vanadium in Soil by N_2O─ C_2H_2 FAAS

本文在文献［１］、［２］的基础上，进一步研究了用Ｎ＿２Ｏ—Ｃ＿２Ｈ＿２火焰原子吸收法测定土壤样品中痕量Ｂｅ和Ｖ时，样品的消解方法及消除共存组分干扰的方法，从而建立了Ｎ＿２Ｏ—Ｃ＿２Ｈ＿２火焰原子吸收法测定土壤样品中痕量Ｂｅ和Ｖ的方法。该法具有抗干扰能力强、准确可靠、简便易行、线性范围较宽的特点。测定Ｂｅ的线性范围为０—１μｇＢｅ／ｍＬ试液；测定Ｖ的线性范围为０—２５μｇＶ／ｍＬ试液。测定Ｂｅ和Ｖ的灵敏度（１％吸收）分别为０．０１４μｇ／ｍＬ和０．５１μｇ／ｍＬ，检测限分别为０．００７μｇ／ｍＬ和０．２５μｇ／ｍＬ。

In this paper, methods for decomposing soil samples and eliminating influences is studied onliterature[1] and[2]when determining trace amount of Beryllium(Be)and Vanadium(V) byN_2O-C_2H_2 FAAS,then methods for determining trace amount of Be and V in soil by N_2O C_2H_2 FAAS is established. This methods is characterized by strong anti influence,accuracy ,reliability,convenience and wide linear range,and linear range for Be and V is respectively 0-1μg/mL and 0-25μg/mL,sensitivity (1%absorption)for Be and V is respectively 0. 014μg/mL and 0.51μg/mL,and de- tective limitation for Be and V is respectively 0.007μg/mL,and 0.25μg/mL