Andrew Galatinadded a comment 9 years ago
что то несуразное вы написали
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Анна Киниченкоasked for translation 9 years ago
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1 times the levels detected
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Анна Киниченкоadded a comment 9 years ago
the recovery was determined by adding known amount of the standard substances, approximately 1 times the levels detected in unspiked samples prior to extraction