测定方法 | 目标物 | 加标量mg/L | 加标1# | 加标2# | 加标3# | 均值 | 加标回收率% | 加标回收率均值% |
1. 直接进样气相色谱法 (外标法) | 甲醇 | 70 | 65.4 | 68.5 | 69.3 | 67.7 | 96.7 | 99.7 |
190 | 188.1 | 192.6 | 189.7 | 190.1 | 100.1 | |||
250 | 249.8 | 249.1 | 249.8 | 249.6 | 99.8 | |||
异丙醇 | 60 | 57.6 | 60.4 | 56.9 | 58.3 | 97.2 | ||
310 | 313.1 | 312.5 | 310.8 | 312.1 | 100.7 | |||
460 | 463.1 | 459.3 | 446.2 | 456.2 | 99.2 | |||
乙醇 | 650 | 656.5 | 657.1 | 647.7 | 653.8 | 100.6 | ||
4300 | 4429 | 4340 | 4311 | 4360 | 101.4 | |||
8800 | 8712 | 8712 | 8799 | 8741 | 99.3 | |||
正丙醇 | 55 | 55.55 | 53.9 | 55.5 | 55 | 100.0 | ||
260 | 263.2 | 258.8 | 261.7 | 261.2 | 100.5 | |||
380 | 383.4 | 391.4 | 379.7 | 384.8 | 101.3 | |||
2. 顶空进样气相色谱法 (外标法)(1) | 甲醇 | 70 | 68.9 | 70.4 | 69.7 | 69.7 | 99.6 | 99.7 |
190 | 193.8 | 189.9 | 195.6 | 193.1 | 101.6 | |||
250 | 245 | 249.9 | 242.4 | 245.8 | 98.3 | |||
异丙醇 | 60 | 59.4 | 59.4 | 59.4 | 59.4 | 99 | ||
310 | 303.8 | 297.7 | 288.8 | 296.8 | 95.7 | |||
460 | 450.8 | 455.3 | 469 | 458.4 | 99.7 | |||
乙醇 | 650 | 663 | 656.4 | 636.7 | 652 | 100.3 | ||
4300 | 4343 | 4430 | 4341 | 4371 | 101.7 | |||
8800 | 8976 | 8707 | 8533 | 8739 | 99.3 | |||
正丙醇 | 55 | 54.5 | 54.5 | 56.1 | 55 | 100 | ||
260 | 257.4 | 257.4 | 262.5 | 259.1 | 99.7 | |||
380 | 380 | 380 | 391.4 | 383.8 | 101 | |||
3. 直接进样气相色谱法 (内标法)(1) | 甲醇 | 70 | 69.7 | 70.2 | 70.6 | 70.2 | 100.3 | 100.2 |
190 | 191.9 | 189.8 | 190.8 | 190.8 | 100.4 | |||
250 | 250 | 250 | 250 | 250 | 100 | |||
异丙醇 | 60 | 60 | 59.4 | 60.4 | 59.9 | 99.8 | ||
310 | 310 | 310 | 313.1 | 311 | 100.3 | |||
460 | 460 | 462.6 | 463.2 | 461.9 | 100.4 | |||
3. 直接进样气相色谱法 (内标法)(1) | 乙醇 | 650 | 656.5 | 649.9 | 643.4 | 649.9 | 100 | 100.2 |
4300 | 4300 | 4343 | 4343 | 4371 | 101.7 | |||
8800 | 8888 | 8799.1 | 8887.1 | 8739 | 99.3 | |||
正丙醇 | 55 | 55 | 54.5 | 54 | 54.5 | 99.1 | ||
260 | 262.6 | 261.2 | 263.7 | 262.5 | 101 | |||
380 | 376.2 | 380 | 383.8 | 380 | 100 | |||
4. 顶空进样气相色谱法 (内标法) | 甲醇 | 70 | 69.7 | 70.1 | 69.5 | 69.8 | 99.7 | 100.1 |
190 | 188.1 | 191.4 | 190.7 | 190.1 | 100.1 | |||
250 | 252.5 | 248.6 | 253.4 | 251.5 | 100.6 | |||
异丙醇 | 60 | 59.7 | 60.4 | 59.3 | 59.8 | 99.7 | ||
310 | 310 | 310.7 | 313.1 | 311.3 | 100.4 | |||
460 | 459.4 | 460.8 | 455.3 | 458.5 | 99.7 | |||
乙醇 | 650 | 648.5 | 650.9 | 649.4 | 649.6 | 99.9 | ||
4300 | 4300 | 4343 | 4386 | 4371 | 101.7 | |||
8800 | 8888 | 8977 | 8887 | 8739 | 99.3 | |||
正丙醇 | 55 | 55 | 55.6 | 56.2 | 55.6 | 101.1 | 100.1 | |
260 | 260 | 257.4 | 254.8 | 257.4 | 99 | |||
380 | 383.8 | 380 | 376.2 | 380 | 100 |