GOST 13938 11-2014 Copper Method for determination of arsenic mass fraction《铜 砷质量分数的测定方法》.pdf

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7、 0,1 3,02,02,01,050404020250250250 1002010 , . 25 3 , 1 : 1, - 10 . , 10 15 3 - . 50 3 . 5 - , 1 , - .4 13938.112014 100 3 1 3 . , 12 . , , 100 3 , 2/3 . 0,0005 % 0,002 % , 0,002 % 0,1 % - , 2. 250 3, 10 3 120 130 . 1 - 135 140 . , - 100 /3. 10 12 40 3 , 35 . , - 50 3, . 20 820 600 680 . . . . , , 7.4.9 9.1 ,%,X =mm110000c215,(1)X =mVmV1110000c215c215c215,(2) m1 , , ;m , ;V , 3;V1 , 3.9.2 , - ( = 0,95) r, - 1.