Abstract： A batch of “crude copper oxide” during Customs inspection and supervision was identified to judge whether it is solid waste. By screening, the sample was prepared into three analyzed samples with different particle sizes. Through the analysis of appearance, chemical analysis, X-ray fluorescence spectrometry and X-ray diffraction spectrum, it was concluded that the sample was mainly composed of copper, cuprous oxide and copper oxychloride. The sample was judged as residue resulting from copper material machining and polishing process. It was solid waste, rather than industrial product or natural copper ore. Meanwhile, the harmful elements such as lead, cadmium, mercury, arsenic and fluorine were analyzed, offering scientific basis for Customs supervision and resources recycle.
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