图1
表1 现场数据对比
检测日期 | 报警器 | 碘量法ppm | 差值ppm | |
测定值ppm | 均值ppm | |||
20130701 | 1000 | 1000 | 370 | 630 |
1000 | ||||
20130704 | 540 | 545 | 37 | 508 |
550 | ||||
20130705 | 467 | 447 | 4.9 | 442.1 |
427 | ||||
20130712 | 190 | 185 | 61 | 124 |
180 |
图2
图3
表2标气测定
标气浓度ppm | 瓶号 | 置信度 | 取样点大气压力kPa | 气体平均温度t | t时的饱和蒸气压kPa | 取样体积L | Vn | 硫代硫酸钠浓度M | 空白耗量mL | 样品耗量mL | 硫化氢量mg/m3 | V/V% |
53 | 572444 | 99%,K=3,U=2% | 90.95 | 25.5 | 3.24 | 50.00 | 42.49 | 0.01105 | 16.38 | 5.08 | 50.07 | 35.55 |
16.22 | 0.71 | |||||||||||
81 | L01706106 | 99%,K=3,U=1% | 90.5 | 28.5 | 3.88 | 30.00 | 24.93 | 0.01105 | 16.38 | 5.35 | 83.31 | 60.85 |
90.5 | 28.5 | 3.88 | 30.00 | 24.93 | 0.01105 | 16.38 | 15.90 | 3.63 | ||||
10.5 | L103803137 | 99%,K=3,U=2% | 90.6 | 24.5 | 3.05 | 100.008 | 85.12 | 0.01105 | 16.38 | 11.30 | 11.24 | 8.07 |
90.6 | 24.5 | 3.05 | 100.008 | 85.12 | 0.01105 | 16.38 | 16.25 | 0.29 |
图4
表3 标液滴定
标液浓度 | 取样体积mL | 硫代硫酸钠浓度M | 空白耗量mL | 样品耗量mL | 硫化氢量mg/m3 |
标液108.9+2.5mg/L | 10.00 | 0.01105 | 16.63 | 10.47 | 109.11 |
标液108.9+2.5mg/L | 10.00 | 0.01105 | 16.61 | 10.47 | 108.76 |
表4不同取样量测定
标气浓度V/V% | 瓶号 | 置信度 | 大气压力kPa | 气体平均温度t | t时的饱和蒸气压kPa | 取样体积L | Vn | 空白耗量mL | 样品耗量mL | 硫化氢量mg/m3 | V/V% |
52 | L103802064 | 99%,K=3,U=2% | 89.85 | 35.55 | 5.91 | 30.02 | 23.62 | 17.10 | 11.6 | 43.84 | 30.69 |
90.5 | 27 | 3.55 | 50.01 | 41.93 | 16.63 | 5.46 | 50.16 | 35.59 | |||
16.48 | 0.67 |
图5
图6