HJT1992005水质总氮的测定气相分子吸收光谱法

HJHJ/T1992005WaterqualityDeterminationofTotalNitrogenByGas-phasemolecularabsorptionspectrometry2005-11-092006-01-01IHJ/T1992005112131415162728292103113123IIHJ/T199200520051192006111HJ/T199200510.050mg/L0.200mg/L100mg/L2GB118948933.1412012455.1pH2100ml5.240gK2S2O815gNaOH100ml5.3C(HCl)=5mol/L5.415%5.5Mg(ClO4)28105.61.00mg/ml1051102hNaNO33.034g500ml5.7(10.00g/ml)5.662HJ/T19920056.16.1.16.1.2Cd123456.1.36.1.4300ml05ml6.1.550ml6.1.64010026.1.71.11.3kg/cm21201246.1.81350ml55.5PVC6.1.16.235mA0.5L/min214.4nm100%117%7pH224h85150g50ml6.1.510ml5.26.1.71.11.3kg/cm250min40ml91010.13HJ/T19920055ml10.20.000.501.001.502.002.50ml5.72.5ml2.5ml5.36.1.3702(6.1.7)10min6.1.40.5ml5.4g10.382.5ml10.211()505.2/,0×−=VmmLmgNmgm0gVml1212.13.05mg/L0.15mg/Ln=62.953.04mg/L1.14%12.23.05mg/L0.15mg/L3.01mg/L1.3%15.25g93.0%101%