Issues in glyphosate analysis
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I am using the lead nitrate titration method to determine trace amounts of bisphosphonate in wastewater, but the color change is not very noticeable (as the wastewater is brown; after dilution it becomes light **). I hope those who have done this before can offer some advice. Thank you!
This is glyphosate produced by the IDAN method, right? It seems that there’s no good way to determine it at the moment.
1. Should the wastewater sample be pre-treated for decolorization first (such as using activated carbon)? Or should the sample be purified through a solid-phase extraction column first? Let’s consider removing the background color of the sample first. 2. Other analytical methods are also available and should be tried, such as automatic potentiometric titration and HPLC. There are literature reports on the HPLC method.
1# hppei: Our company uses chemical titration, and it’s very effective
I’ve encountered a similar problem as well: when titrating bisphenol A with a 0.05 mol/L lead nitrate standard solution, does the indicator azoarsenide change from purple to colorless instead of blue? I’m not sure why, but on the 4th floor, could you tell me which manufacturer produces your azo arsenic? My QQ is 120335082; can you add me as a friend?
I was wondering if there was any point during your titration process when a noticeable color change occurred; why did the color change occur slowly in my experiment?