Preparation method of standard substance for detecting harmful heavy metal in ornaments

The invention relates to a preparation method of a standard substance for detecting harmful heavy metal in ornaments. Zinc powder, lead powder and cadmium powder with certain purity are uniformly mixed according to a certain mass ratio; the mixture is put in an ultrasonic instrument to be oscillated...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	XU FEIFEI, JIANG SHILEI, CHAI MINGQING, ZHU JUN, XIANG WEI, ZHAO MEIRONG, LIU YALI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
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