A new software of calculating the pH values of coastal seawater: Considering the effects of low molecular weight organic acids

doi:10.1016/j.marchem.2019.03.011

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋生态研究中心

	A new software of calculating the pH values of coastal seawater: Considering the effects of low molecular weight organic acids
	Lyu, Li-Na 1,2; Lu, Daoming 3; Sun, Chengjun 1,4; Ding, Haibing 1,5,6,7; Yu, Liang-Min 1,5; Yang, Gui-Peng 1,5,6,7
刊名	MARINE CHEMISTRY
	2019-04-20
卷号	211 页码:108-116
关键词	Organic acid pH Coastal seawater Jiaozhou Bay
ISSN号	0304-4203
DOI	10.1016/j.marchem.2019.03.011
英文摘要	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.
资助项目	National Natural Science Foundation for Creative Research Groups[41521064]
WOS研究方向	Chemistry ; Oceanography
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000467669600009
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/21449]
专题	业务部门_海洋生态研究中心
通讯作者	Ding, Haibing; Yang, Gui-Peng
作者单位	1.Ocean Univ China, Coll Chem & Chem Engn, 238 Songling Rd, Qingdao 266100, Shandong, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou, Guangdong, Peoples R China 3.Zhenjiang Coll, Coll Chem & Mat Engn, Zhenjiang, Jiangsu, Peoples R China 4.State Ocean Adm, Inst Oceanog 1, Marine Ecol Ctr, Qingdao, Shandong, Peoples R China 5.Ocean Univ China, Minist Educ, Key Lab Marine Chem Theory & Technol, 238 Songling Rd, Qingdao 266100, Shandong, Peoples R China 6.Ocean Univ China, Qingdao Collaborat Innovat Ctr Marine Sci & Techn, Qingdao, Shandong, Peoples R China 7.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Lyu, Li-Na,Lu, Daoming,Sun, Chengjun,et al. A new software of calculating the pH values of coastal seawater: Considering the effects of low molecular weight organic acids[J]. MARINE CHEMISTRY,2019,211:108-116.
APA	Lyu, Li-Na,Lu, Daoming,Sun, Chengjun,Ding, Haibing,Yu, Liang-Min,&Yang, Gui-Peng.(2019).A new software of calculating the pH values of coastal seawater: Considering the effects of low molecular weight organic acids.MARINE CHEMISTRY,211,108-116.
MLA	Lyu, Li-Na,et al."A new software of calculating the pH values of coastal seawater: Considering the effects of low molecular weight organic acids".MARINE CHEMISTRY 211(2019):108-116.