sampling for sulphuric acid mist version for slideshare
DESCRIPTION
Discussion of options available for sampling for sulphuric acid mist in the workplace.TRANSCRIPT
![Page 1: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/1.jpg)
Mike Slater
![Page 2: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/2.jpg)
This Slideshare version of the presentation includes some additional explanatory text not included on the original slides
![Page 3: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/3.jpg)
Recognition Evaluation Control
![Page 4: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/4.jpg)
Recognition Evaluation Control
Occupational hygiene is about preventing ill health at work
![Page 5: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/5.jpg)
Recognition Evaluation Control
Measuring exposure to hazardous substances can be an important part of that process
![Page 6: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/6.jpg)
![Page 7: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/7.jpg)
A new Workplace Exposure Limit (WEL) has recently been introduced for sulphuric acid mist
![Page 8: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/8.jpg)
It’s the first limit to be specified as the thoracic fraction
![Page 9: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/9.jpg)
The “thoracic fraction” includes those particles that can deposit in the regions of the respiratory system coloured blue and pink on this diagram
Image Source: http://www.skcinc.com
![Page 10: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/10.jpg)
Criteria for selecting a suitable method:
![Page 11: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/11.jpg)
Specificity
Criteria for selecting a suitable method:
![Page 12: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/12.jpg)
Specificity
Criteria for selecting a suitable method:
No interferences from other compounds that may be present
![Page 13: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/13.jpg)
Specificity
Sensitivity
Criteria for selecting a suitable method:
![Page 14: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/14.jpg)
Specificity
Sensitivity
Criteria for selecting a suitable method:
preferably can detect concentrations as low as 1/10th of the WEL (i.e. 0.005mg/m3)
![Page 15: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/15.jpg)
Specificity
Sensitivity
Thoracic fraction
Criteria for selecting a suitable method:
![Page 16: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/16.jpg)
Specificity
Sensitivity
Thoracic fraction
Personal sampling
Criteria for selecting a suitable method:
![Page 17: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/17.jpg)
BS ISO 21438-1: 2007
Workplace atmospheres – Determination of inorganic acids by ion chromatography, part 1: Non-volatile acids (sulphuric acid and phosphoric acid)
![Page 18: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/18.jpg)
BS ISO 21438-1: 2007
Workplace atmospheres – Determination of inorganic acids by ion chromatography, part 1: Non-volatile acids (sulphuric acid and phosphoric acid)
The method commonly used in the UK
![Page 19: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/19.jpg)
BS ISO 21438-1: 2007
Workplace atmospheres – Determination of inorganic acids by ion chromatography, part 1: Non-volatile acids (sulphuric acid and phosphoric acid)
This collects the inhalable fraction
![Page 20: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/20.jpg)
Source:www.tsi.com
![Page 21: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/21.jpg)
Particulates
Inhalable Thoracic Respirable
![Page 22: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/22.jpg)
Particulates
Inhalable Thoracic Respirable
Lets look at the methods used to collect the different fractions
![Page 23: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/23.jpg)
Particulates
Inhalable Thoracic Respirable
![Page 24: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/24.jpg)
Inhalable Fraction
7 hole head IOM head
Operate at 2 litres/minute
Filter cassette
![Page 25: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/25.jpg)
I.O.M sampler
The common sampler used in the UK
![Page 26: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/26.jpg)
BS ISO 21438-1: 2007
Workplace atmospheres – Determination of inorganic acids by ion chromatography, part 1: Non-volatile acids (sulphuric acid and phosphoric acid)
Collects the inhalable fraction
![Page 27: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/27.jpg)
Particulates
Inhalable Thoracic Respirable
![Page 28: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/28.jpg)
Respirable Fraction
Source: http://www.skcinc.com
The cyclone sampler
![Page 29: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/29.jpg)
Particulates
Inhalable Thoracic Respirable
![Page 30: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/30.jpg)
Thoracic Fraction
![Page 31: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/31.jpg)
Thoracic Fraction
A universal method has not been established
![Page 32: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/32.jpg)
Thoracic Fraction
So let’s look at some possible options
![Page 33: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/33.jpg)
Respirable - Thoracic Cyclones
Source: www.bgiusa.com/ihi/hfrtc.htm
This sampler is used for oil mist in the USA
![Page 34: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/34.jpg)
Parallel Particle Impactor Size-selective Samplers for Thoracic or Respirable Particulates
Source: http://www.skcinc.com/prod/225-380.asp
![Page 35: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/35.jpg)
So what are the options for sampling sulphuric acid mist?
![Page 36: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/36.jpg)
Specificity
Sensitivity
Thoracic fraction
Personal sampling
Criteria for selecting a suitable method:
![Page 37: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/37.jpg)
![Page 38: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/38.jpg)
Nyrstar method
Staplex Model TFIA-2F high volume sampler with 4-inch diameter filter
![Page 39: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/39.jpg)
Nyrstar method
Not personal sampling
![Page 40: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/40.jpg)
Nyrstar method
Not thoracic fraction
![Page 41: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/41.jpg)
Nyrstar method
Specificity
Sensitivity
Thoracic fraction
Personal sampling
![Page 42: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/42.jpg)
Source:www.tsi.com
![Page 43: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/43.jpg)
Option 1
Sample for inhalable fraction
![Page 44: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/44.jpg)
BS ISO 21438-1: 2007
Specificity
Sensitivity
Thoracic fraction
Personal sampling
![Page 45: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/45.jpg)
BS ISO 21438-1: 2007
Specificity
Sensitivity
Thoracic fraction
Personal sampling
The problems with interferences can be overcome
![Page 46: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/46.jpg)
Option 1
Sample for inhalable fraction
This approach will overestimate the thoracic fraction
![Page 47: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/47.jpg)
Option 1
Sample for inhalable fraction
But if results lower than 0.05 mg/m3, then the thoracic concentration will be well below the limit
![Page 48: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/48.jpg)
Option 1
Sample for inhalable fraction
If results substantially higher than 0.05 mg/m3, then it is likely that the limit will be exceeded
![Page 49: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/49.jpg)
Option 1
Sample for inhalable fraction
But results will be difficult to interpret if they are just above 0.05 mg/m3
![Page 50: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/50.jpg)
Option 2
Develop and validate a method for the thoracic fraction of sulphuric acid mist
![Page 51: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/51.jpg)
Option 2
Develop and validate a method for the thoracic fraction of sulphuric acid mist
Method development and validation will be expensive
![Page 52: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/52.jpg)
Option 2
Develop and validate a method for the thoracic fraction of sulphuric acid mist
I think it is unlikely that HSE will fund this
![Page 53: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/53.jpg)
Other important considerations
Correcting for background sulphate
Sampling strategy
Interpreting results
![Page 54: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/54.jpg)
[email protected] www.diamondenv.co.uk http://diamondenv.wordpress.com www.slideshare.net/mikeslater Twitter @diamondenv
Mike Slater
![Page 55: Sampling for sulphuric acid mist version for slideshare](https://reader034.vdocuments.us/reader034/viewer/2022052218/55519befb4c905013a8b4cc7/html5/thumbnails/55.jpg)
Mike Slater, Diamond Environmental Ltd. ([email protected])
This presentation is distributed under the Creative Commons Attribution-NonCommercial-ShareAlike
UK:International Licence