ZHAO Tong-xin¹, CHEN Wen-di^1*, YIN Ting², Gong Yan-dong³, SUN You-bao¹, HUANG Tao-hong¹

(1. Analytical Applications Center，SHIMADZU（China）Co.，Ltd.，Shanghai Branch, Shanghai 200233，China;
2. SHIMADZU（China）Co.，Ltd.，Beijing Branch, Beijing 100020，China;
3. SHIMADZU（China）Co.，Ltd.，Shenyang Branch, Shenyang 110016，China)

Abstract: Beryl is the most common silicate mineral containing ultra-light element of beryllium. Its accurate quantitative determination has been a major difficulty in the field of microbeam analysis. In this paper, the characteristics and difficulties for micro-area measuring ultra-light elements have been summarized. The chemical compositions of beryl, a Be-containing mineral, have been analyzed by using EPMA on the basis of the idea for all-element testing. Satisfactory results were obtained. The results show that oxygen in minerals including silicates can be measured directly by using the all-element testing method. In addition, more ideal quantitative analytical results of minerals containing water or elements of varying valence could be achieved by using the all-element testing method.

Keywords: Ultra-light element, beryllium, beryl, EPMA, quantitative analysis

ACTA MINERALOGICA SINICA Vol. 40, No.2, 2020, page 169-175