Monitoring hydrogen sulphide and total reduced sulphur in

0,83

MB

atmospheric releases and ambient air

43

stron

6569

ID

Environment Agency

2001

rok

Contents

1. Introduction 1

2. Background 2

3. Occurrence and usage 2

4. Properties, toxicology and hazards 4

5. Monitoring strategy 6

5.1 General considerations 6

5.2 Source releases and stack monitoring 6

5.3 Ambient monitoring 7

6. Monitoring techniques 9

6.1 Scope 9

6.2 Techniques for source releases and stacks 9

6.2.1 Continuous monitoring 9

6.2.2 Periodic sampling 9

6.2.3 Grab sampling 9

6.3 Techniques for ambient air 10

6.3.1 Continuous monitoring 10

6.3.2 Periodic sampling 10

6.3.3 Grab sampling 10

7. Specific published methods for measurement of H2S and TRS 11

7.1 Source releases and stack monitoring 11

7.1.1 International standard methods 11

7.1.2 National standard methods 11

7.1.3 Other methods 16

7.2 Ambient monitoring 16

7.2.1 International standard methods 16

7.2.2 National standard method 17

7.2.3 Other methods 17

7.3 Olfactometric methods 20

7.3.1 Method background 20

7.3.2 International standard method 20

7.3.3 National standard method 20

8. Method selection 21

8.1 General considerations 21

8.2 Key factors in method selection 21

8.3 Choosing methods for monitoring stack releases 24

8.4 Choosing methods for ambient monitoring 25

9. Quality control and quality assurance 26

9.1 Quality control 26

9.2 Quality assurance 27

10. References 28

Appendix 1: Analytical principles relevant to H2S and TRS 29

Appendix 2: Grab sampling 39