fortified Samples，Dilution Integrity，Matrix Effects，Carryover Evaluation，Relative Retention.
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The average recovery of fortified samples was 103%.
样品的平均回收率为103%。
The average recovery of fortified samples was 94% .
样品的平均回收率为94%。
Results:The precision of the GC method was improved, and it solved the problem that the recoveries of fortified samples trended to upper departure from 110%.
结果：方法的精密度得到改善，克服了添加回收率偏高的问题。
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