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前言碳、氮和氧族元素的氢化物是共价氢化物,它们的价电子数等于或大于轨道数。这类元素包括 As、Al、B、Bi、Ge、P、Pb、Se、Sb、Si、Sn、Te 和Ti。这13种元素中,已有8种元素生成的共价氢化物的量能满足实际分析的需要,它们是 As、Bi、Ge、Pb、Sb、Se、Sn 和 Te。氢化物的发生及其后的原子吸收测定的基本操作程序可以分为四步。第一,发生氢化物;第二,氢化物的捕集(如果需要的话);第三,将氢化物输送至原子化器内;第四,氢化物在原子吸收分光光度计的光路中分解为气态金属原子。测得的原子吸收信号与
Introduction Hydrides of carbon, nitrogen and oxygen species are covalent hydride and their valence number is equal to or greater than the number of orbits. Such elements include As, Al, B, Bi, Ge, P, Pb, Se, Sb, Si, Sn, Te and Ti. Of the 13 elements, 8 have been generated for the amount of covalent hydride to meet the needs of the actual analysis, they are As, Bi, Ge, Pb, Sb, Se, Sn and Te. Hydride generation and subsequent atomic absorption determination of the basic operating procedures can be divided into four steps. First, hydride generation; second, capture of hydride, if needed; third, transport of hydride into the atomizer; fourth, hydride decomposition in the optical path of an atomic absorption spectrophotometer to Gaseous metal atoms. The measured atomic absorption signal and