ABSTRACT
L e a d is r ecovered b y hea t ing the glass fibre filters i n 6 M h y d r o c h l o r i c a c i d a n d the s o l u t i o n ana lysed b y a tomic abso rp t ion spec t romet ry u s i n g the 2 1 7 n m l e a d l ine . I n ac tua l r i v e r wa te r ana lys i s there w a s n o p H adjus tment o r other pre-treatment of the sample . T h e presence of re la t ive ly h i g h concentra t ions of manganese d u r i n g l e a d analyses caused n o interferences o r a sp i ra t ing p r o b l e m s .
