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迄今,分光光度法测定锌,选择性和灵敏度均佳者甚少。常用的二硫腙萃取一光度法及 PAN 萃取一光度法等虽较灵敏,但干扰元素多,实际操作常需进行繁锁分离。等以硫氰酸盐和孔雀绿萃取-光度法测定锌,方法有高灵敏度,但需用苯等有毒的有机溶剂萃取;吸光度受 pH 值影响较大,且萃取平衡不够迅速;加之在近中性介质中萃取,一些易水解的金属离子可
To date, spectrophotometric determination of zinc, with very good selectivity and sensitivity. Commonly used dithizone extraction of a photometric method and PAN extraction of a photometric method is more sensitive, but the interference of many elements, the actual operation often requires complicated separation. Such as thiocyanate and malachite green extraction - spectrophotometric determination of zinc, the method has high sensitivity, but with benzene and other toxic organic solvent extraction; absorbance by the pH value of the larger, and the extraction balance is not fast enough; coupled with the near In the medium of extraction, some easily hydrolyzed metal ions can be