Accurate spectrophotometric pH measurements made directly in the sample bottle using an aggregated dye perturbation approach
Accurate spectrophotometric pH measurements made directly in the sample bottle using an aggregated dye perturbation approach
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使用聚合染料扰动方法直接在样品瓶中进行准确的分光光度 pH 测量
DOI:
10.1002/lom3.10486
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Bockmon, Emily E.
中科院分区:
文献类型:
--
作者:
Takeshita, Yuichiro;Mertz, Keaton L.;Norgaard, Addie;Gray, Sara;Verburg, Maddie H.;Bockmon, Emily E.
Spectrophotometric pH measurements of seawater (pHspec) are routinely made by the oceanographic community for a wide variety of studies. However, obtaining consistent measurements between laboratories that meet stringent thresholds such as the “weather” (± 0.02) and “climate” (± 0.003) standards, has been a challenge. One of the main sources of error for pHspecmeasurements is gas exchange of carbon dioxide during sample handling. Here, we present a simple method where pHspecmeasurements on the total scale are made directly in the sampling bottle, which minimizes sample handling errors because the solution is not transferred during analysis. We compared the performance of this method to a standard automated benchtop system on a hydrography cruise, and the two methods were consistent to 0.003 ± 0.0033 (1σ). This demonstrates that this simple method can produce pHspecthat approaches climate quality, and comfortably meets weather quality standards. Additional benefits include high sample throughput, and the ability to rapidly quantify dye perturbation effects for each sample. The latter should be particularly useful for low salinity samples such as those taken from estuaries, insofar as modifications specific to the pHspecmeasurements of estuarine waters are employed.
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DOI:
10.1029/2020jc016505
发表时间:
2020
期刊:
Journal of Geophysical Research: Oceans
影响因子:
--
作者:
Wright‐Fairbanks, Elizabeth K.;Miles, Travis N.;Cai, Wei‐Jun;Chen, Baoshan;Saba, Grace K.
通讯作者:
Saba, Grace K.
影响因子:
3
作者:
Takeshita, Yuichiro;Warren, Joseph K.;Liu, Xuewu;Spaulding, Reggie S.;Byrne, Robert H.;Carter, Brendan R.;DeGrandpre, Michael D.;Murata, Akihiko;Watanabe, Shu-ichi
通讯作者:
Watanabe, Shu-ichi
影响因子:
3
作者:
Xuewu Liu;R. Byrne;Michael Lindemuth;R. Easley;J. Mathis
通讯作者:
J. Mathis
DOI:
10.1086/711242
发表时间:
2020
期刊:
The Biological Bulletin
影响因子:
--
作者:
Galloway, A. W.;von Dassow, G.;Schram, J. B.;Klinger, T.;Hill, T. M.;Lowe, A. T.;Chan, F.;Yoshioka, R. M.;Kroeker, K. J.
通讯作者:
Kroeker, K. J.
DOI:
--
发表时间:
2018
期刊:
Journal of Geophysical Research: Oceans
影响因子:
--
作者:
Y. Takeshita;Kenneth S. Johnson;T. Martz;J. Plant;J. Sarmiento
通讯作者:
J. Sarmiento