For alkaline soils, Olsen's method using 1M sodium bicarbonate is recommended for determination of soil available P.
However my ICP-OES technician says that because there is Na concentration in extract, P cannot be determined.
Known solutions:
1) Use UV-visible spectrophotometer for P estimation from the extract.
2) Use Colwell P method.
3) remove Na in the soil extracts and then determine P in the extracts.
Requesting experts to suggest the best solution. I have access to ICP at convenience. UV-visible spectrophotometer is not available currently.
Kindly help me in this matter.
Merry Christmas to all!
Thanking you,
Best Regards,
Rohan
The extraction procedure to analyse samples by ICP-OES is different. For more details please check the attached files.
Dear sir, thank you for the suggestion. I am looking for extraction procedure for available P in soil.
Acid digestion will not give desired results. I will once again read the attachments to see if I have missed out on suitable extraction procedure.
With Best Regards,
Rohan
I think you can Use UV-visible spectrophotometer for P estimation from the extract. It's easy and accurate and I use it.
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