Figure 7

Percent of total Pb in chloride, hydroxide, and sulfide complexes as a function of pH-log conditions along the 0.01 ppm total Pb isopleth in Fig. 2. Specific pH-log conditions (pH, log ) are given in Table 5, along with corresponding % of total Pb values for various forms of Pb, and begin at the right end of the 0.01 ppm isopleth with data set #8 (8, -52.20), followed by #7 (7, -51.95), #6 (5, -51.90), #5 (4, -51.90), #4 (4.2, -52.00), #3 (4.75, -52.90), #2 (5.8, -54.00), and #1 (6.3, -55.00).