Volume 41 Issue 3
Mar.  2022
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Jianrong Lin. Liquid waveguide capillary cell for the spectrophotometric determination of nanomolar iodate concentrations in marine waters[J]. Acta Oceanologica Sinica, 2022, 41(3): 103-108. doi: 10.1007/s13131-021-1921-0
Citation: Jianrong Lin. Liquid waveguide capillary cell for the spectrophotometric determination of nanomolar iodate concentrations in marine waters[J]. Acta Oceanologica Sinica, 2022, 41(3): 103-108. doi: 10.1007/s13131-021-1921-0

Liquid waveguide capillary cell for the spectrophotometric determination of nanomolar iodate concentrations in marine waters

doi: 10.1007/s13131-021-1921-0
Funds:  The Zhangzhou Natural Science Foundation of Fujian under contract No. ZZ2020J29.
More Information
  • Corresponding author: E-mail: jrlin@xmu.edu.cn
  • Received Date: 2021-01-31
  • Accepted Date: 2021-05-20
  • Available Online: 2021-11-10
  • Publish Date: 2022-03-01
  • A new spectrophotometric method based on a liquid waveguide capillary cell for an enhanced detection was developed to measure nanomolar iodate concentrations. This method has a detection limit and precision of 1–2 nmol/L, which is equivalent to 10% that of conventional methods, a recovery of 97.7%–104.0%, and a working range of 10–120 nmol/L. Water samples were collected from three estuaries and one coastal ocean for testing, and the proposed technique detected as low as 11 nmol/L and 18 nmol/L iodate in these samples. This newly developed method is helpful in understanding the biogeochemical cycle of iodine in nature.
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