A new software of calculating the pH values of coastal seawater: Considering the effects of low molecular weight organic acids
Effects of low molecular weight organic acids (LMWOAs) on the pH value of seawater were investigated in the surface seawater of the Jiaozhou Bay, China. The new software of Org center dot TCO2TA was developed to calculate the pH values of seawater based on the alkalinity (Alk) equation where organic...
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Language: | English |
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Online Access: | http://ir.gig.ac.cn/handle/344008/51078 https://doi.org/10.1016/j.marchem.2019.03.011 |
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ftchacadscgigcas:oai:ir.gig.ac.cn:344008/51078 2023-05-15T17:51:27+02:00 A new software of calculating the pH values of coastal seawater: Considering the effects of low molecular weight organic acids Lyu, Li-Na Lu, Daoming Sun, Chengjun Ding, Haibing Yu, Liang-Min Yang, Gui-Peng 2019-04-20 http://ir.gig.ac.cn/handle/344008/51078 https://doi.org/10.1016/j.marchem.2019.03.011 英语 eng ELSEVIER SCIENCE BV MARINE CHEMISTRY http://ir.gig.ac.cn/handle/344008/51078 doi:10.1016/j.marchem.2019.03.011 Chemistry Oceanography Organic acid pH Coastal seawater Jiaozhou Bay Multidisciplinary OCEAN ACIDIFICATION PARTIAL-PRESSURE ACETIC-ACID CARBON ALKALINITY SEA CHLORIDE SODIUM SYSTEM MATTER 期刊论文 2019 ftchacadscgigcas https://doi.org/10.1016/j.marchem.2019.03.011 2020-12-22T07:22:36Z Effects of low molecular weight organic acids (LMWOAs) on the pH value of seawater were investigated in the surface seawater of the Jiaozhou Bay, China. The new software of Org center dot TCO2TA was developed to calculate the pH values of seawater based on the alkalinity (Alk) equation where organic acid Alk (Org-Alk) was separated into LMWOA Alk (LMWOA-Alk) and humic acid Alk (HA-Alk). In the calculations, all dissociation constants of organic acids were from previous literature. In our study, the average concentration of total LMWOAs was 14.5 +/- 11.2 mu mol.kg(-1) SW. pH values from the Org center dot TCO2TA software were closer to the pH values from spectrophotometric measurement than those from the CO2SYS program, indicating pH values can be influenced by high concentrations of LMWOAs in coastal seawater of the Jiaozhou Bay. Although the differences still existed between the pH values from the spectrophotometric method and the calculated pH values from the Org center dot TCO2TA software due to the influence of various factors, including the analytical errors of dissolved inorganic carbon and nutrients, the new software can calculate the pH values of coastal seawater more accurately by considering the effects of LMWOAs. Report Ocean acidification Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences) Marine Chemistry 211 108 116 |
institution |
Open Polar |
collection |
Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchacadscgigcas |
language |
English |
topic |
Chemistry Oceanography Organic acid pH Coastal seawater Jiaozhou Bay Multidisciplinary OCEAN ACIDIFICATION PARTIAL-PRESSURE ACETIC-ACID CARBON ALKALINITY SEA CHLORIDE SODIUM SYSTEM MATTER |
spellingShingle |
Chemistry Oceanography Organic acid pH Coastal seawater Jiaozhou Bay Multidisciplinary OCEAN ACIDIFICATION PARTIAL-PRESSURE ACETIC-ACID CARBON ALKALINITY SEA CHLORIDE SODIUM SYSTEM MATTER Lyu, Li-Na Lu, Daoming Sun, Chengjun Ding, Haibing Yu, Liang-Min Yang, Gui-Peng A new software of calculating the pH values of coastal seawater: Considering the effects of low molecular weight organic acids |
topic_facet |
Chemistry Oceanography Organic acid pH Coastal seawater Jiaozhou Bay Multidisciplinary OCEAN ACIDIFICATION PARTIAL-PRESSURE ACETIC-ACID CARBON ALKALINITY SEA CHLORIDE SODIUM SYSTEM MATTER |
description |
Effects of low molecular weight organic acids (LMWOAs) on the pH value of seawater were investigated in the surface seawater of the Jiaozhou Bay, China. The new software of Org center dot TCO2TA was developed to calculate the pH values of seawater based on the alkalinity (Alk) equation where organic acid Alk (Org-Alk) was separated into LMWOA Alk (LMWOA-Alk) and humic acid Alk (HA-Alk). In the calculations, all dissociation constants of organic acids were from previous literature. In our study, the average concentration of total LMWOAs was 14.5 +/- 11.2 mu mol.kg(-1) SW. pH values from the Org center dot TCO2TA software were closer to the pH values from spectrophotometric measurement than those from the CO2SYS program, indicating pH values can be influenced by high concentrations of LMWOAs in coastal seawater of the Jiaozhou Bay. Although the differences still existed between the pH values from the spectrophotometric method and the calculated pH values from the Org center dot TCO2TA software due to the influence of various factors, including the analytical errors of dissolved inorganic carbon and nutrients, the new software can calculate the pH values of coastal seawater more accurately by considering the effects of LMWOAs. |
format |
Report |
author |
Lyu, Li-Na Lu, Daoming Sun, Chengjun Ding, Haibing Yu, Liang-Min Yang, Gui-Peng |
author_facet |
Lyu, Li-Na Lu, Daoming Sun, Chengjun Ding, Haibing Yu, Liang-Min Yang, Gui-Peng |
author_sort |
Lyu, Li-Na |
title |
A new software of calculating the pH values of coastal seawater: Considering the effects of low molecular weight organic acids |
title_short |
A new software of calculating the pH values of coastal seawater: Considering the effects of low molecular weight organic acids |
title_full |
A new software of calculating the pH values of coastal seawater: Considering the effects of low molecular weight organic acids |
title_fullStr |
A new software of calculating the pH values of coastal seawater: Considering the effects of low molecular weight organic acids |
title_full_unstemmed |
A new software of calculating the pH values of coastal seawater: Considering the effects of low molecular weight organic acids |
title_sort |
new software of calculating the ph values of coastal seawater: considering the effects of low molecular weight organic acids |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
2019 |
url |
http://ir.gig.ac.cn/handle/344008/51078 https://doi.org/10.1016/j.marchem.2019.03.011 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
MARINE CHEMISTRY http://ir.gig.ac.cn/handle/344008/51078 doi:10.1016/j.marchem.2019.03.011 |
op_doi |
https://doi.org/10.1016/j.marchem.2019.03.011 |
container_title |
Marine Chemistry |
container_volume |
211 |
container_start_page |
108 |
op_container_end_page |
116 |
_version_ |
1766158612038680576 |