University of North Florida
Browse the Citations
-OR-

Contact Info

Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf

View Stuart Chalk's profile on LinkedIn

Haiyang Yu Huzhao

  • Publisher: Wanfang Data
  • FAD Code: HYYH
  • CODEN: HYHCAG
  • ISSN: 0029-814X
  • Abbreviation: Haiyang Yu Huzhao
  • DOI Prefix: NA
  • Other Name(s): Oceanologia et Limnologia Sinica
  • Language: Chinese
  • Comments: Fulltext from 2000 V31

Citations 2

"Catalytic Determination Of Copper In Natural Water At µg/L Level By Flow Injection Analysis"
Haiyang Yu Huzhao 1988 Volume 19, Issue 2 Pages 157-163
Yuan Youxian; Qu, Keming

Abstract: The method is based on the catalytic effect of Cu(II) on the oxidation of quinol by H2O2. Aqueous 0.9% H2O2 containing phosphate buffer of pH 7 to 7.2 (2.18 mL min-1) and 3.5% quinol solution (1.75 mL min-1) were mixed with the sample in a PTFE coil (4.5 m x 0.8 mm) at 65 ± 0.5°C, and the quinone formed was determined spectrophotometrically at 420 nm. The calibration graph was rectilinear up to 50 µg L-1 of Cu; the detection limit was 0.7 µg l-1. In the determination of 40 µg L-1 of Cu, the coefficient of variation was 2.9%. Recoveries of Cu from natural waters were 92 to 104%.
Copper(II) Environmental Spectrophotometry Catalysis Heated reaction Merging zones

"Flow Injection Analysis Of Iron In Marine Sediments"
Haiyang Yu Huzhao 1987 Volume 18, Issue 2 Pages 156-161
Yuan, Youxian

Abstract: A flow injection analysis using the Fe(II)-bathophenanthroline-Triton X-100 system was developed and applied to the determination of Fe in marine sediments. The method is simple and selective. One hundred determinations can be run in an hour, and 50 mL of sample volume is required for each determination The linear range for calibration curve and detection limit are 0.5-4.0 and 0.02 ppm Fe, respectively. The coefficient of variation for 3.0 ppm Fe solution is 2.0%.
Iron Marine Spectrophotometry