[Spectrophotometric determination of lead in blood with tetraphenylporphine trisulfonic acid].
D006801:Humans; D007854:Lead / Q000097:blood*; D011166:Porphyrins; D013053:Spectrophotometry / Q000379:methods*
D011166:Porphyrins; D007854:Lead; C016136:tetraphenylporphine sulfonate