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STD1
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STD2
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STD3
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STD4
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ÈÜҺŨ¶Èug/ml
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ÈÜҺŨ¶Èug/ml
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Ca
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0
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0.2
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0.5
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1.0
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Fe
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0
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0.2
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0.5
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1.0
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Al
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0
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0.2
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0.5
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1.0
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Ti
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0
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0.2
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1.0
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Cr
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0
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0.2
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0.5
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1.0
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Ni
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0
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0.2
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0.5
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1.0
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Mg
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0
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0.2
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1.0
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Mn
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0
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0.2
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1.0
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V
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0
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0.2
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1.0
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Cu
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Mo
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0.2
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P
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Co
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Zr
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0
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0.2
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1.0
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Pb
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0
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0.2
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