KS I ISO 9297-2007 Water quality-Determination of chloride-Silver nitrate titration with chromate indicator(Mohr-s method)《水质 氯化物的测定 铬酸盐作指示剂的硝酸银滴定法(莫尔法)》.pdf

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KS I ISO 9297-2007 Water quality-Determination of chloride-Silver nitrate titration with chromate indicator(Mohr-s method)《水质 氯化物的测定 铬酸盐作指示剂的硝酸银滴定法(莫尔法)》.pdf_第1页
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KS I ISO 9297-2007 Water quality-Determination of chloride-Silver nitrate titration with chromate indicator(Mohr-s method)《水质 氯化物的测定 铬酸盐作指示剂的硝酸银滴定法(莫尔法)》.pdf_第3页
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KS I ISO 9297-2007 Water quality-Determination of chloride-Silver nitrate titration with chromate indicator(Mohr-s method)《水质 氯化物的测定 铬酸盐作指示剂的硝酸银滴定法(莫尔法)》.pdf_第4页
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1、 KS I ISO 9297 KSKSKSKS SKSKSKS KSKSKS SKSKS KSKS SKS KS () KS I ISO 9297 :2007 (2012 ) 2007 6 29 http:/www.kats.go.krKS I ISO 9297:2007 : ( ) ( ) ( ) : (http:/www.standard.go.kr) : : 1997 6 3 : 2007 6 29 :2012 12 27 : 20120787 : ( 02-509-7270) (http:/www.kats.go.kr). 10 5 , . KS I ISO 9297:2007 ii

2、1 1 2 2 3 .2 4 .2 4.1 2 4.2 2 4.3 .2 4.4 .3 4.5 3 4.6 .3 5 .3 5.1 .3 6 3 6.1 .3 6.2 4 7 4 7.1 4 7.2 .4 8 .5 i KS I ISO 9297:2007 ii 1989 1 ISO 9297, Water qualityDetermination of chlorideSilver nitrate titration with chromate indicator(Mohrs method) . KS I ISO 9297:2007 (2012 ) () Water qualityDeter

3、mination of chlorideSilver nitrate titration with chromate indicator(Mohrs method) 1 . 5 150 mg/L . 400 mg/L . . , , . . , , , , 6(II), 6(III) , . (II) . . 1 mg/L Br I S 2CN Fe(CN) 6 4Fe(CN) 6 3NH 4 S 2 O 3 2SO 3 2SCN CrO 4 2PO 4 33 5 0.8 1 2 2 100 200 70 3 1 000 25 KS I ISO 9297:2007 1 70 mg/L 2 %

4、(mg/L) . 2 . . KS L ISO 3851:2005, 1: KS M 9112, ( ) KS M ISO 56671, ( ) KS M ISO 56672, 2: ISO 5725:1986, Precision of test methodsDetermination of repeatability and reproducibility for a standard test method by inter-laboratory tests(KS A ISO 572516 ) 3 . . . pH 5 9.5 . 4 . . . 4.1 c(AgNO 3 ) 0.02

5、 mol/L 105 (AgNO 3 ) 3.397 g 1 1 000 mL . . 6.1 10 mL(100 mL ) pH . 4.2 100 g/L (K 2 CrO 4 ) 10 g 100 mL . 4.3 c(NaCl)0.02 mol/L 105 (NaCl) 1.168 8 g 1 1 000 mL . 2 KS I ISO 9297:2007 4.4 c(HNO 3 ) 0.1 mol/L . 4.5 c(NaOH) 0.1 mol/L 4.6 (CaCO 3 ) (NaHCO 3 ) 5 . 5.1 25 mL KS L ISO 3851 . 6 KS M ISO 56

6、671, KS M ISO 56672 KS M 9112 . 6.1 100 mL 100 mL ( V a ) . pH 5 9.5 , (4.4) (4.5) pH , / . 10 mg/L pH 6.57 . 1 pH 1 , pH / . pH 5 , pH . . . 1 mL . ( V s ). . . 25 mL . 3 KS I ISO 9297:2007 6.2 1 000 mL 6.1 . 4.1 0.2 mL . . 7 7.1 Cl (mg/L) . a b s Cl ) ( V f c V V Cl : (mg/L) V a : ( 100 mL .)(mL)

7、V b : (mL) V s : (4.1) (mL) c : (AgNO 3mol/L) f : (35 453 mg/mol) 1 mg/L . 7.2 2 . 2 L N x mg/L x mg/L r mg/L CV r % R mg/L CV R% 11 9 10 44 36 39 12.57 63.79 106.4 12.75 64.20 106.6 0.213 0.372 0.676 1.7 0.6 0.6 0.572 0.787 1.287 4.5 1.2 1.2 L : x : R : r : N : x : CV R : CV r : 4 KS I ISO 9297:200

8、7 5 8 . a) b) c) d) () 153787 1 145 3(16) (02)26240114 (02)26240148 http:/ KS I ISO 9297 :2007KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Water ality Determination of qu chloride Silver nitrate titration with chromate indicator(mohrs method) ICS 13.060.50 Korean Agency for Technology and Standards http:/www.kats.go.kr

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