河口和近海连接陆地与海洋两大系统，是人类活动影响海洋和气候系统的重要渠道。受人类活动和全球变化影响，河口-近海区域富营养化、缺氧、酸化等生态环境问题突出，且多重效应耦合，机制复杂。为应对全球环境变化给各区域、国家和社会带来的挑战，提升生物地球化学过程与生态系统过程等基础科学研究，亟需对海洋环境参数进行现场多参数、高精度、高时空分辨率的自动测定。通用型海水化学参数现场分析方法与仪器的缺乏，使得一些科学研究发展受到制约，很多重要机制的深入探究缺少综合数据的支持。基于此背景，马剑课题组研发了基于注射泵的集成式水环境分析仪（integrated Syringe-pump-based Environmental-water Analyzer, iSEA），由注射泵、选择阀和LabVIEW编写的软件组成。采用分光光度法对各化学参数进行测定。该系统具有体积小巧、易于操作、试剂消耗量少、稳定性好、通用性强等优点。近5年相关论文如下：
Yao Deng, Peicong Li, Tengyue Fang, Yiyong Jiang, Jixin Chen, Nengwang Chen, Dongxing Yuan, Jian Ma*, Automated determination of dissolved reactive phosphorus at nanomolar to micromolar levels in natural waters using a portable flow analyzer, Analytical Chemistry, 2020, 92, 4379-4386
Tengyue Fang, Peicong Li, Kunning Lin, Nengwang Chen, Yiyong Jiang, Jixin Chen, Dongxing Yuan, Jian Ma*, Simultaneous underway analysis of nitrate and nitrite in estuarine and coastal waters using an automated integrated syringe-pump-based environmental-water analyzer, Analytica Chimica Acta, 2019, 1076, 100-109.
Qipei Shangguan, Huilin Shu, Peicong Li, Kunning Lin, Robert H. Byrne, Quanlong Li, Dongxing Yuan, Jian Ma*, Automated spectrophotometric determination of carbonate ion concentration in seawater using a portable syringe pump based analyzer, Marine Chemistry, 2019, 209, 120-127.
Peicong Li, Yao Deng, Huilin Shu, Kunning Lin, Nengwang Chen, Yiyong Jiang, Jixin Chen, Dongxing Yuan, Jian Ma*, High-frequency underway analysis of ammonium in coastal waters using an integrated syringe-pump-based environmental-water analyzer (iSEA), Talanta, 2019, 195, 638-646
Jian Ma*, Peicong Li, Zhaoying Chen, Kunning Lin, Nengwang Chen, Yiyong Jiang, Jixin Chen, Bangqin Huang, Dongxing Yuan, Development of an integrated syringe-pump-based environmental-water analyzer (iSEA) and application of it for fully automated real-time determination of ammonium in fresh water, Analytical Chemistry, 2018, 90(11), 6431-6434
 

流动分析；海洋观测；分光光度法；营养盐；pH