测定方法

目标物

低、中、高浓度样品峰面积(pA×s)

均值

精密度/%

精密度均值%

1. 直接进样气相色谱法

(外标法)

甲醇

71.78767

69.38342

72.97574

67.04163

71.56781

72.78636

70.9238

3.2

3.2

190.91642

188.04407

194.53936

182.31585

184.31106

184.67641

187.467

2.5

251.60204

263.69354

279.91418

269.61719

264.49409

264.30886

265.605

3.5

异丙醇

63.25581

63.30594

60.69897

65.10207

66.78952

66.12895

64.2135

3.5

314.30928

309.63774

318.21363

299.17551

304.39637

299.0042

307.456

2.6

457.78438

483.52903

511.73715

489.51441

480.78733

482.25386

484.268

3.6

乙醇

666.2105

660.80841

634.04551

682.0617

705.03779

689.52865

672.949

3.7

4299.4602

4238.0084

4369.0074

4105.6561

4130.7013

4085.4475

4204.71

2.7

8386.7538

8832.388

9353.4794

8969.6349

8787.8221

8837.6214

8861.28

3.5

正丙醇

54.70244

54.00607

52.10513

56.38366

57.85451

56.58211

55.2723

3.8

265.07039

261.12904

269.48001

253.64079

254.63055

252.19434

259.358

2.7

383.9113

404.65696

428.45534

410.22781

402.12167

404.31321

405.614

3.5

2. 顶空进样气相色谱法

(外标法)⁽¹⁾

甲醇

128877.9

135321.8

132744.3

131455.5

130166.7

130166.7

131455.5

1.8

2.9

374620.4

374620.4

401654.9

393930.7

393930.7

366896.3

384275.6

3.6

525676.4

499907.9

515369.0

510215.3

510215.3

530830.1

515369.0

2.2

异丙醇

507858.8

482465.8

482465.8

507858.8

497701.6

492623

495162.3

2.3

1102843

1136603

1136603

1125350

1080336

1170364

1125350

2.8

1729829

1799022

1643338

1677934

1695233

1747127

1715414

3.2

乙醇

261886.8

269903.7

280593

272576

259214.5

264559.1

268122.2

2.9

1423582

1452635

1481687

1438108

1525266

1525266

1474424

3.0

2770393

2741535

2972401

2770393

2943543

2741535

2823300

3.7

正丙醇

226480.6

224145.8

224145.8

235820

231150.3

224145.8

227648.0

2.1

475872.8

480882.0

525964.7

495909.5

480882.0

475872.8

489230.6

4.0

654994.7

648635.5

648635.5

604121.3

667713.0

629558.0

642276.3

3.5

测定方法

目标物

低、中、高浓度样品中内标物对目标物的校正因子f

均值

精密度/%

精密度均值%

3. 直接进样气相色谱法

(内标法)⁽¹⁾

甲醇

1.463

1.475

1.469

1.479

1.474

1.475

1.473

0.4

0.5

1.446

1.46

1.478

1.472

1.468

1.481

1.468

0.9

1.451

1.459

1.460

1.442

1.47

1.458

1.457

0.6

异丙醇

1.05

1.054

1.047

1.074

1.059

1.039

1.054

1.1

1.041

1.041

1.045

1.038

1.033

1.046

1.041

0.5

1.045

1.042

1.044

1.045

1.045

1.048

1.045

0.2

3. 直接进样气相色谱法

(内标法)⁽¹⁾

乙醇

1.097

1.101

1.099

1.098

1.100

1.100

1.099

0.1

0.5

1.089

1.087

1.087

1.091

1.087

1.087

1.088

0.2

1.086

1.087

1.087

1.084

1.087

1.085

1.086

0.1

正丙醇

0.894

0.864

0.873

0.878

0.879

0.864

0.875

1.3

0.875

0.872

0.874

0.874

0.873

0.873

0.874

0.1

0.860

0.859

0.859

0.858

0.861

0.859

0.859

0.1

4. 顶空进样气相色谱法

(内标法)

甲醇

13.760

13.896

13.351

13.896

14.035

13.624

13.760

1.8

1.2

14.064

13.513

14.012

13.851

13.924

13.651

13.836

1.5

13.592

13.679

13.867

13.588

13.456

13.730

13.652

1.0

异丙醇

3.183

3.215

3.261

3.220

3.151

3.247

3.213

1.3

3.251

3.283

3.284

3.276

3.251

3.316

3.277

0.7

3.308

3.275

3.241

3.253

3.279

3.328

3.281

1.0

乙醇

7.226

7.046

7.173

7.083

7.225

7.011

7.127

1.3

7.224

7.153

7.114

7.153

7.139

7.153

7.156

0.5

7.218

7.165

7.29

7.147

7.218

7.172

7.202

0.7

正丙醇

7.132

6.922

6.852

7.107

7.062

7.009

7.014

1.6

7.137

6.857

6.997

6.927

7.067

7.067

7.009

1.5

6.991

7.024

7.013

6.949

7.129

7.005

7.018

0.9