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4、 3 . . , , . 4 ( .).4.1 (grade 3 water) ISO 3696. ISO 1418422014 2 4.2 ( ) 150 800 (4.1), 3 2 , 1000 (4.1). . 12 . 12 . , , , 6 . , . , . 4.3 , 37 %- (/ /). 5 5.1 , 0,95 1,0 (. 1). a) b) , 1 , 2 , 3 ; 4 1 (), 5.2 ( ). , , . . . 15,2 14,0 3,8 , , , . . , . . 5.3 , (49 2) . 5.4 50 , 250 , 500 1000 . 5
5、.5 1 , 5 , 10 , 15 , 20 , 25 , 30 50 5 . ISO 1418422014 3 , , . 5.6 10 50 . 5.7 , , , 412 . 5.8 . 5.9 , (40 2) . 5.10 0,2 . 6 6.1 1500 / 3,8 (4.3) 1 (4.1). , . . , 4- , . 6.2 , 1 50 , 50 . 6.2.1 (S2) 10 ( 1,5 / ), 6.1, (4.1) 200 . 75 / . 6.2.2 (S2) (4.1) 500 , , , : - 1 S2, 500 , 0,15 2/ = 7,5 / 2 ;
6、 - 2 S2, 500 , 0,30 2/ = 15 / 2 ; - 5 S2, 500 , 0,75 2/ = 37,5 / 2 ; - 10 S2, 500 , 1,50 2/ = 75 / 2 ; - 15 S2, 500 , 2,25 2/ = 112,5 / 2 ; - 20 S2, 500 , 3,00 2/ = 150 / 2 ; - 30 S2, 500 , 4,50 2/ = 225 / 2 ; - 40 S2, 500 , 6,00 2/ = 300 / 2 . y = a + bx . . 500 /, , , . , , , . 20 / , 1,00 50 . 20 , , 1 0,4 . 7 , . . 1 10 . ISO 1418422014 4 , . , . , , , . 8 50 (4.1) . , . (5.3) (49 2) 20 15 . (30 5) , . , , . (4.2): 5 (5.8) 5 , , . 5 5 (4.1) , . (5.9) (40 2) (30 5) . (5.7) (reagent blank), 412 10 . /, , . , 500 / , 5:5, 500 /, , ( ). . (, 1 ) , , , . , ( , ), , , . 9 ,
