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Journal of Analytical Science and Technology
Fig. 3 | Journal of Analytical Science and Technology

Fig. 3

From: Online zinc reduction-sequential injection analysis for the determination of nitrogen species in extracts of riverine sediment

Fig. 3

a Effect of sample-to-buffer ratio on Zn reduction illustrating increase in sensitivity with increasing sample-to-buffer ratio. b Effect of buffer pH on Zn reduction illustrating decrease in sensitivity with increasing buffer pH. c Effect of Na2EDTA concentration on Zn reduction using 10.0 mg N L−1 standard. d Comparison of ammonium buffer to borate buffer for the gas interference prevention

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