BIOSORPTION OF Pb2+, Cd2+, & Ni2+ FROM WATERS BY ...

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Table 2.1. The properties of chemicals and reagents.
Item No Reagent Concentration Company Product Code Cas No Purpose of Use
1 Pb(NO3)2 4000.0 mg/L Riedel-de Haën 31137 [1099-74-8] Stock Solution
2 CdCI2 4000.0 mg/L Fluka 20899 [10325-94-7] Stock Solution
3 NiCI2.6H2O 4000.0 mg/L Carlo Erba 464645 [7791-20-0] Stock Solution
4 HNO3 (65%) 0.01, 0.10, 1.00 M Merck 1.00456 [7697-37-2] pH adjustment
5 HNO3 (65%) Concentrated Merck 1.00456 [7697-37-2] Sample acidification
6 NH3 0.01, 0.10, 1.00 M Merck 1.05422 [7664-41-7] pH adjustment
7 H2SO4 (95-97%) 5.0 % Riedel-de Haën 07208 [7664-93-9] Silicate synthesis
8 HCI 0.1 M Merck 1.00314 [7647-01-0] Eluent
9 Na-Silicate 6.0 % Sigma-Aldrich 338443 [61981-08-6] Silicate synthesis
10 Agarose 2.0 g / 90.0 mL Sigma-Aldrich A5093 [9012-36-6] Agarose bead synthesis
11
Na-Citrate tribasic
dihydrate
0.1 M Riedel-de Haën 32320 [6132-04-3] Eluent
12 BaCI2.2H2O 0.2 M Riedel-de Haën 11411 [10326-27-9]
13 Triton X-100 0.01 % Fluka 93420 [9002-93-1]
Checking the presence of SO4 2- in
biomass immobilization
Elimination of oily phase from
agarose bead