The Air Quality Limit Values (Scotland) Regulations 2001

Regulation 7(6)

SCHEDULE 6 REFERENCE METHODS FOR ASSESSMENT OF CONCENTRATIONS OF SULPHUR DIOXIDE, NITROGEN DIOXIDE AND OXIDES OF NITROGEN, PARTICULATE MATTER (PM₁₀ AND PM_2.5) AND LEAD

PART I REFERENCE METHOD FOR THE ANALYSIS OF SULPHUR DIOXIDE:

ISO/FDIS 10498 (Standard in draft) Ambient air – determination of sulphur dioxide – ultraviolet fluorescence method(1).

PART II REFERENCE METHOD FOR THE ANALYSIS OF NITROGEN DIOXIDE AND OXIDES OF NITROGEN:

ISO 7996: 1985 Ambient air – determination of the mass concentrations of nitrogen oxides – chemiluminescence method(2).

PART IIIA REFERENCE METHOD FOR THE SAMPLING OF LEAD:

The reference method for the sampling of lead will be that described in the Annex to Directive 82/884/EEC(3) until such time as the limit value in Schedule 1 to these Regulations is to be met, when the reference method will be that for PM₁₀ as laid down in Part IV of this Schedule.

PART IIIB REFERENCE METHOD FOR THE ANALYSIS OF LEAD:

ISO 9855: 1993 Ambient air – Determination of the particulate lead content of aerosols collected in filters. Atomic absorption spectroscopy method(4).

PART IV REFERENCE METHOD FOR THE SAMPLING AND MEASUREMENT OF PM₁₀

The reference method for the sampling and measurement of PM₁₀ will be that described in EN 12341 “Air Quality – Field Test Procedure to Demonstrate Reference Equivalence of Sampling Methods for the PM₁₀ fraction of particulate matter”(5). The measurement principle is based on the collection on a filter of the PM₁₀ fraction of ambient particulate matter and the gravimetric mass determination.

(1)

Copies of these International Standards Organisation publications can be purchased from the British Standards Institution “BSI” sales department either by telephone on 020-8996-9001 or by post from the BSI, Standards House, 389 Chiswick High Road, London W4 4AL.

(2)

Copies of these International Standards Organisation publications can be purchased from the British Standards Institution “BSI” sales department either by telephone on 020-8996-9001 or by post from the BSI, Standards House, 389 Chiswick High Road, London W4 4AL.

(3)

O.J. No. L 378, 31.12.82, p.15.

(4)

Copies of these International Standards Organisation publications can be purchased from the British Standards Institution “BSI” sales department either by telephone on 020-8996-9001 or by post from the BSI, Standards House, 389 Chiswick High Road, London W4 4AL.

(5)

European Standards Institute “CEN” publication reference BSEN 12341, obtainable from the British Standards Institute “BSI” as for footnote (a) above