METHODS OF TEST FOR PAINTS AND VARNISHES: PART B5: DETERMINATION OF ‘SOLUBLE’ LEAD CONTENT BY FLAME ATOMIC ABSORPTION SPECTROMETRIC METHOD AND DITHIZONE SPECTROPHOTOMETRIC METHOD
This part of the Malaysian Standard describes two methods for the determination of the lead content of the test solutions, prepared according to MS 1431 and MS 133 : Part B4.
The methods are applicable to paints having ‘soluble’ lead contents in the range of about 0.05 to 5% (m/m).
The flame atomic absorption spectrometric (AAS) method (Clause 3) should be used as the referee method in cases of dispute. Other methods can be used by agreement between the interested parties. If a spectrophotometric method is agreed, the dithizone spectrophotometricmethod (Clause 4) should be used.
