Fresenius' Zeitschrift für analytische Chemie

, Volume 316, Issue 7, pp 711–712 | Cite as

Determination of the pH-value in acidic soil by means of the ethyl red spectrophotometric method

  • Qiu Xing-chu
  • Zhang Yu-sheng
  • Zhu Ying-quan
Original Papers


The indicator ethyl red has been employed for the determination of the pH-value of acidic soil solutions. The measurement was performed by spectrophotometry at 550 nm against a pH-standard solution. For pH-values between 5.3 and 6.8 standard deviations between 0 and 0.07 were found.


Hydrochloric Acid Solution Potassium Dihydrogenphosphate Purple Soil Disodium Hydrogenphosphate Standard Coefficient Deviation 
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Bestimmung des pH-Wertes von sauren Böden mit der spektralphotometrischen Ethylrotmethode


Zur Messung des pH-Wertes in sauren Bodenlösungen wurde der Indicator Ethylrot verwendet. Die Messung wurde spektralphotometrisch bei 550 nm gegen eine pH-Standardlösung durchgeführt. Bei pH-Werten von 5,3 bis 6,8 lag die Standardabweichung zwischen 0 und 0,07.


  1. 1.
    Nanjing Soil Institute, Academia Sinica (1978) Soil physicochemical analysis. Shanghai Science and Technology Press, Shanghai, p 143Google Scholar
  2. 2.
    Zhu Ying-quan et al (1981) Practical analytical chemistry. Sichuan People's Press, Chengdu, p 236Google Scholar
  3. 3.
    Tong Shen-yang (1980) Chemistry, 3, p 32Google Scholar

Copyright information

© Springer-Verlag 1983

Authors and Affiliations

  • Qiu Xing-chu
    • 1
  • Zhang Yu-sheng
    • 1
  • Zhu Ying-quan
    • 2
  1. 1.Agricultural Science Research Institute of Ganzhou PrefectureJiangxi
  2. 2.ChengduChina

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