(Appendix 3) Major and trace element concentrations of referenced geostandards JB-1a and JGb-1

Certified JB-1a and JGb-1 values from Imai et al. (1995, doi:10.1111/j.1751-908X.1995.tb00158.x). Major and trace elements were measured using ICP-OES (Jobin Yvon Horiba Ultima 2) and ICP-MS (Thermo Elemental X7 series) after preparation following the lithium metaborate fusion method.

Imai等人（1995，doi:10.1111/j.1751-908X.1995.tb00158.x）提供的认证JB-1a和JGb-1值。样品经锂硼酸盐熔融法制备后，采用电感耦合等离子体发射光谱仪（ICP-OES，Jobin Yvon Horiba Ultima 2型）和电感耦合等离子体质谱仪（ICP-MS，Thermo Elemental X7系列）测定主量元素和微量元素。