1、 1HZHJSZ00102 HZ-HJ-SZ-0102 1 10mm 0.06mg/L 3.0mg/L EDTA-Ca 2 3 3.1 BaCl2 2H2O 0.1779g 50mL 1mol/L 5mL 100mL 1.00mg 10.0g 3.2 10g/L 3.3 77g NH4Ac 500mL pH 7 3.4 95%3.5 5g/L 3.6 0.5mol/L 3.7 EDTA-Ca 0.62gEDTA-Na2 0.72gCaCl2 50mL(1+1)pH 4 4.1 10mm 4.2 25mm 0.45m 5 5.1 5.1.1 5.1.2 0.45 m 5.1.3 S2Fe2+10
2、0mL 5.0mL 5.0mL 10mL 5.2 1 10mL 30g 25mL(1+1)1%(m/V)0.5mL(pH7)2.0mL 10.0mL 0.45m 40%(V/V)0.5mol/L 4.0mL 2mL 10.0mL 35 9.0mL 10mL 0.5%(m/V)1.0mL 10min 10mm 545nm 25.3 0 0.50 1.00 1.50 2.00 3.00mL 25mL 6 c Ba,mg/L=Vm m g V mL 7 6 4.60mg/L 2.14%6.65%0.65%105.6 3.1%0.0632981mg/L 1.6%8.8%90%109.7%1 2 3 4 CrO42-5 8 pp.430432 1997
