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研究了石墨炉原子吸收光谱中ＧｄＣｌ３、Ｇｄ（ＮＯ３）３基体的背景吸收影响。背景吸收波长特性的研究表明，ＧｄＣｌ３和Ｇｄ（ＮＯ３）３的背景吸收都具有明显的波长特性。蒸发行为研究表明ＧｄＣｌ３的背景吸收主要来自ＧｄＣｌ３的分子蒸气，Ｇｄ（ＮＯ３）３的背景吸收主要来自ＮＯ。钆基体的背景吸收峰高与灰化温度有关，ＧｄＣｌ３背景吸收曲线轮廓与原子化温度和原了化方式有关。Ｇｄ（ＮＯ３）３的背景吸收远小于ＧｄＣｌ３。本文还讨论了消除ＧｄＣｌ３背景吸收的方法
The background absorption of GdCl3, Gd (NO3) 3 matrix in graphite furnace atomic absorption spectrometry was studied. The study of the background absorption wavelength shows that the background absorption of GdCl3 and Gd (NO3) 3 all have obvious wavelength characteristics. Evaporation behavior studies show that the background absorption of GdCl3 is mainly from the molecular vapor of GdCl3, and the background absorption of Gd (NO3) 3 is mainly from NO. The background absorption peak height of gadolinium matrix is related to ashing temperature. The contour of GdCl3 background absorption curve is related to the atomization temperature and the original pattern. The background absorption of Gd (NO3) 3 is much smaller than that of GdCl3. This article also discusses ways to eliminate background absorbance of GdCl3