In this section, 1000 ppm of Pb2+ stock solution was initially provided through dissolving the desired volume of (Pb NO3 2) in deionized water; the corresponding concentrations were then obtained from the dilution of the stock solution.
Obtain 1000 parts per millions (ppm) of lead solution stock solution.
We have prepared 296.11 μM (100 ppm) aqueous stock solution of Mancozeb.
The stock solution (200 ppm) of mixed OCPs was prepared in 10 mL of n-hexane.
The stock solution (200 ppm) of mixed OCPs was prepared in 10 mL n-hexane.
The 100 ppm stock solution of Pb2+ was prepared by dissolving of Pb NO3 2 in distilled water.
1000 ppm stock solutions of cadmium and zinc were prepared by dissolving appropriate quantities of their respective chlorides in distilled water and working standards of required strength were prepared by diluting the stock solutions.
Stock solution of 200,00 ppm of phenol was prepared by dissolving 0.2 g of phenol in 10 ml in distilled water.
A stock solution of 1000 ppm of each dye was prepared and diluted with distilled water to prepare diluted standard solutions.
Flavonolignan stability was assessed by preparing a stock solution containing 100 ppm of each flavonolignans in methanol and was stored at room temperature for 72 h.
