Test methods for analysis of lead in pvc taken from insulation and sheath of electric and optical fibre cables - method a : total lead content determination with flame excitation atomic absorption spectrometry - method b : qualitative analysis of lead by lead sulphide staining 聚氯乙烯绝缘和护套光电纤维电缆铅分析的试验方法.方法a :用火焰激发原子吸收光谱测定法测定法含铅总量测定.方法b :硫化铅斑渍中铅的定性分析
