YS/T 71-2004 Wet lead

YS/T 71-1993 Crude lead

YS/T 71-2013 Wet lead

GB/T 1250-1989 Rules for expression and judgement of limiting values GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values YS/T 248.1-2007 Methods for chemical analysis of crude lead—Determination of lead content—Na2 EDTA titrimetric method YS/T 248.2-2007 Methods for chemical analysis of crude lead—Determination of tin content—Phenylfuorone photometric method and potassium iodate titrimetric method YS/T 248.3-2007 Methods for chemical analysis of crude lead—Determination of antimony content—Flame atomic absorption spectrometric method YS/T 248.4-2007 Methods for chemical analysis of crude lead—Determination of arsenic content—Molybdoantimonyarsenate blue photometric method and Extraction-iodometric method YS/T 248.5-2007 Methods for chemical analysis of crude lead—Determination of copper content—Flame atomic absorption spectrometric method YS/T 248.6-2007 Methods for chemical analysis of crude lead—Determination of gold and silver content—Fire-assaying method YS/T 248.7-2007 Methods for chemical analysis of crude lead—Determination of silver content—Flame atomic absorption spectrometric method YS/T 248.8-2007 Methods for chemical analysis of crude lead—Determination of zinc content—Flame atomic absorption spectrometric method YS/T 248.9-2007 Methods for chemical analysis of crude lead—Determination of bismuth content—Flame atomic absorption spectrometric method YS/T 248.10-2007 Methods for chemical analysis of crude lead—Determination of iron content—Flame atomic absorption spectrometric method YS/T 248.11-2025 Method for chemical analysis of crude lead - Part 11: Determination of copper, zinc, arsenic, antimony, bismuth, and tin content - Inductively coupled plasma atomic emission spectroscopy (ICP-AES)