微量氯的测定至今还不能令人满意,如离子选择电极法灵敏度不高;比色法则空白值太高;比浊法也因试剂污染而引起影响。为此本法采用一特制的以哈夫炉作炉膛带有石英管的小型热解炉高温热解试样,直接以硫氰酸汞—铁盐溶液吸收被分解出来的氯,以光度法测定之,这样消除了试剂空白给 The determination of trace chlorine has not yet been satisfactory, such as the sensitivity of the ion-selective electrode method is not high; colorimetric blank value is too high; turbidimetric method also caused by reagent contamination. For this reason, this method adopts a special pyrolytic pyrolytic pyrolytic pyrolyzer sample with Haff Furnace Furnace Furnace with quartz tube to directly absorb the decomposed chlorine with mercuric thiocyanate-iron salt solution and measure photometrically This eliminates the reagent blank