Flow Injection Spectrophotometric Determination of Hydrazine in Environmental Water Samples

Abstract:

A simple, accurate, sensitive and selective flow injection spectrophotometric method for rapid determination of amounts of hydrazine was proposed in this paper, which was based on p-dimethylamino-benzaldehyde (pDAB) reacts with hydrazine originating aldazine. The resulting yellow colored product is stable in acidic medium and has a maximum absorption at 460 nm. Upon the optimal condition, the absorption intensity linearly increased with the concentration of hydrazine in the range from 2.0–100.0μgL-1 and 100.0–1500.0μgL−1 with a correlation coefficient of R2 = 0.998(n=11) and and R2=0.9997(n=11), respectively. The experimental detection limit of 0.016μg L-1. The sampling frequency is 24 samples h-1 and the relative standard deviation was 0.38% for 0.1mg L-1. This method is suitable for automatic and continuous analysis, and successfully applied to determine the content of hydrazine in river water, pond water and waste water.

• Periodical: Advanced Materials Research (Volumes 396-398)
• Pages: 130-133
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.396-398.130
• Online since: November 2011
• Authors: Lan Yu, Xin Shen Zhang, Ling Yun Yu
• Keywords: Flow Injection, Hydrazine, Spectrophotometry

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