紫胶红色素异常铜含量的研究

关于紫胶原胶的含铜情况过去尚末见报道,应用原子吸收分光光度法测出紫胶原胶的铜含量为9.49ppm。将紫胶原胶分成粗粒胶、细粒胶、粉胶和紫胶虫尸体四个级分,分别测出其铜含量为8.06ppn、13.44ppm、16.38ppm、49.66ppm。 紫胶原胶中的铜高度富集于紫胶虫尸体之中,它是引起紫胶红色素铜污染的主要污染源。从紫胶的生物来源和紫胶红色素的化学本质分析,紫胶原胶中紫胶红色素的铜污染是不可避免的。

A STUDY ON THE ABNORMAL COPPER CONTENT IN LACCAIC ACID (LAC DYE)

The copper content in stick lac has not been reported. The copper content in stick lac as determined by atomic absorption spcctlophotometry was 9.49 ppm. The copper content in coarse seed lac, fine seed lac, powder lac, and corpses of the lac insect, these four flassified components of stick lac were 8.06 ppm, 13.44 ppm, 16.38 ppm, 49,66 ppm respectively by the same method.The copper in stick lac existed mainly in the corpses of the lac insect and that was the main pollution source causing copper pollution in laccaic acid (lac dye ) . The fact that copper pollution of laccaic acid in stick lac could not be avoided was concluded after considering its biological source and chemical nature.