Recently it has been confirmed that boron is a super trace element for human.
近年来的研究表明，硼为人体必需的微量元素。
The separation of several co-existent elements was investigated and easy and quick determination method of super trace Iridium was established based on it.
确定了萃取和反萃取的条件，考查了多种共存元素的分离情况，并在此基础上，制定了岩石矿物中超微量铱的简便、快速的测定方法。
ICP-AES analysis method, which is bing used widely, is a good way to measure the main, subordination, trace and super -trace element at the same time.
ICP - AES分析法，以其优异的分析性能被广泛应用于各种材料的主要、次要，痕量、超痕量多元素的同时分析。
ICP-AES analysis method, which is bing used widely, is a good way to measure the main, subordination, trace and super -trace element at the same time.
ICP - AES分析法，以其优异的分析性能被广泛应用于各种材料的主要、次要，痕量、超痕量多元素的同时分析。
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