1、 KS I ISO 6778 KSKSKSKS SKSKSKS KSKSKS SKSKS KSKS SKS KS KS I ISO 6778 :2007 (2012 ) 2007 6 29 http:/www.kats.go.krKS I ISO 6778:2007 : ( ) ( ) ( ) : (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 6778:2007 ii 1 1
2、 2 .2 3 .2 3.1 .2 3.2 2 3.3 .3 3.4 .3 3.5 .3 4 .3 4.1 3 4.2 pH/mV .3 4.3 3 4.4 .3 5 3 6 4 6.1 .4 6.2 4 6.3 .4 6.4 5 7 5 7.1 5 8 6 8.1 .6 8.2 .6 8.3 6 8.4 6 9 .7 i KS I ISO 6778:2007 ii 1984 1 ISO 6778, Water quality Determination of ammonium Potentiometric method . KS I ISO 6778:2007 (2012 ) Water q
3、uality Determination of ammonium Potentiometric method 1 . 50 mg/L N . (Nernst) , N 0.2 mg/L . 60 mV . N 50 mg/L , . , . , . , . 0.1 mol/L (, ) 0.2 mg , . . 1 . 1 N 1 mg/L mg/L mg/L 4 1 10 0.4 3.4 11 0.06 0.03 0.03 0.14 0.15 a0.01 a N 0.5 mg/L KS I ISO 6778:2007 . . 2 pH 12 , . . , . 60 mV . ) (NH l
4、og 3 . 2 4 10 0 p c F RT E E E p : (mV) E 0 : (mV) R : T : (K) F : c( ) : (mol/L) 4 NH3 3.1 . 3.1 . 3.1.1 . 3.1.2 (0.100.01) mL ( 1.84 g/mL) (1 00010) mL , . 50 mL , . 10 g () . 3.2 1 mol 0.1 mol . (400.2) g (37.20.2) g (EDTA) 800 mL 1 L . . 2 KS I ISO 6778:2007 ( N 0.5 mg/L) , 20 . 3.3 0.1 mol/L (5
5、.40.1) g 800 mL , 1 L . 3.4 N 1 000 mg/L (3.8190.004) g (2 105 ) 800 mL , 1 (1 000 mL) . 1 mL (N) 1 mg . . 1 . 3.5 N 100 mg/L 100 mL 1 (1 000 mL) . 1 mL 0.1 mg . . . 4 . 4.1 4.2 pH/mV 0.2 mV 4.3 (PTFE) 4.4 100 mL 5 , 24 . 2 5 . , ( 1.84 g/mL) pH 2 . , pH . 3 KS I ISO 6778:2007 6 6.1 6.1.1 3 . , (N)
6、50 mg, 5 mg 0.5 mg 3 . 1 (1 000 mL) 500 mL, 50 mL 5 mL . , , . , . 6.1.2 50 mL (100 mL) . (30050 min 1 .). . , 5 mL . 30 0.1 mV , mV . . . 1 (100 mL) , . 2 . 5 10 . . 3 2 3 . 1 . 6.1.3 N mg mV . (58.52) mV . . 6.2 0.2 mg/L , . . 6.1 . pH 6.1 , . 6.3 . 1 . 50 mL (100 mL) , 6.1.2 . 4 KS I ISO 6778:200
7、7 6.4 . ( , ), . . 7 7.1 mg . mg/L ( N ) ( NH 3 ) ( ) mol/L c( ) . 2 . 4 NH 4 NH 2 NNH 3NH 4c(NH 4 ) mg/L mg/L mg/L mol/L N 1 mg/L NH 3 1 mg/L 4 NH 1 mg/L) NH ( 4 c 1 mol/L 1 0.823 0.777 0.014 1.216 1 0.944 0.017 1.288 1.059 1 0.018 71.4 58.7 55.4 1 1 mg/L 0.777 mg/L . 4 NH 7.2 3 . 3 a bmg/L Nmg/L 0
8、.5 2 25 3 3 8 0.010 0.030 0.060.52 c0.0160.217 c0.0360.205 c0.0350.310 c0.012 0.050 0.241.29 c0.0480.391 c0.0450.476 c0.0850.562 ca b 9 c 5 KS I ISO 6778:2007 8 8.1 6. . . 1. , . 8.2 , . . 8.3 6.3 . 50100 % . . . 1 , 20 mV . 2 . 3 . 8.4 N 1 (mg/L) . 1 ) 1 ( ) ( antilog 2 1 N N 2 1 k S E E k N 2 : (m
9、g/L) E 1 : (mV) E 2 : (mV) S :(6.1 ) (mV/ ) 0 1 V V k V 0 : (mL) V 1 : (mL) 6 KS I ISO 6778:2007 7 9 . a) b) c) d) e) f) 153787 1 145 3(16) (02)26240114 (02)26240148 http:/ KS I ISO 6778 :2007KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Water quality Detemination of ammonium Potentiometric method ICS 13.060.50 Korean Agency for Technology and Standards http:/www.kats.go.kr
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