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2003•Chinese Journal of Spectroscopy LaboratoryRequires access

Determination of Total Phosphorus in Soil by Ammonium Molybdate Spectrophotometry

Pang Wenqin Li Ping

Open publisher page 24 citations

Abstract

After the soil sample was digested with melting NaOH,adjusted pH,reacted with vitamin C and ammonium molybdate for 15min.The total amount of phosphorus in soil was determined by spectrophotometry in 30mm cell at the 700nm against water.Beer's law is obeyed over the range of 0- 1.00mg/L with detection limit of 0.07mg/L.The relative standard deviation is 3.1% and the recovery is in the range of 96.2-97.5%.The method is simple and reliable.

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What this paper is about

After the soil sample was digested with melting NaOH,adjusted pH,reacted with vitamin C and ammonium molybdate for 15min.The total amount of phosphorus in soil was determined by spectrophotometry in 30mm cell at the 700nm against water.Beer's law is obeyed over the range of 0- 1.00mg/L with detection limit of 0.07mg/L.The relative standard deviation is 3.1% and the recovery is in the range of 96.2-97.5%.The method is simple and reliable.

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Available abstract

After the soil sample was digested with melting NaOH,adjusted pH,reacted with vitamin C and ammonium molybdate for 15min.The total amount of phosphorus in soil was determined by spectrophotometry in 30mm cell at the 700nm against water.Beer's law is obeyed over the range of 0- 1.00mg/L with detection limit of 0.07mg/L.The relative standard deviation is 3.1% and the recovery is in the range of 96.2-97.5%.The method is simple and reliable.

Key concepts: Ammonium molybdate, Spectrophotometry, Chemistry, Phosphorus, Detection limit, Molybdate, Ammonium, Relative standard deviation

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