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nfm 225 40 sigma sludge pump

nfm 225 40 sigma sludge pump

Nov 01, 2013 Working standards of 1, 2, 4, 8, 10, 20, and 40 μg L −1 were then prepared by serial dilutions of the working solution with MeOH. A solution of the internal standard mixture of the NFMs was prepared by dissolving AOZ- d 4 , AMOZ- d 5 , AHD- 13 C 3 , and SEM- 13 C, 15 N 2 into MeOH as the preparation of the NFM standard and by adding this to ...

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