THE USES OF HYDROXY ACIDS IN CHELATOMETRY——Ⅰ.THE MASKING OF TIN(Ⅳ)WITH LACTIC ACID AND THE INDIRECT TITRATION OF TIN
CHEN YUNG-CHAO, HSIAO CHIN-YUNG, FANG CHUNG-GIN
Acta Chimica Sinica . 1964, (3): 330 -335 .