Simple and affordable colorimetric sensing strips for quantitative determination of total manganese in porewater samples

IF 2.1 3区地球科学 Q2 LIMNOLOGY Limnology and Oceanography: Methods Pub Date : 2024-04-18 DOI:10.1002/lom3.10615

Ignacio Pedre, Nico Fröhberg, Hannelore Waska, Andrea Koschinsky, Katharina Pahnke

{"title":"Simple and affordable colorimetric sensing strips for quantitative determination of total manganese in porewater samples","authors":"Ignacio Pedre, Nico Fröhberg, Hannelore Waska, Andrea Koschinsky, Katharina Pahnke","doi":"10.1002/lom3.10615","DOIUrl":null,"url":null,"abstract":"Simple and economical colorimetric strips for measuring manganese (Mn) in natural waters are described. For their construction, leucomalachite green (LMG) embedded in a Nafion® polymeric matrix was immobilized on a polyvinylchloride surface. Upon immersing the strips in the sample, any soluble manganese(II/III) present catalyzed the oxidation of the LMG base to malachite green by adding sodium periodate. The observed color change is related to the manganese concentration and can be quantified using a field device constructed using commercial red–green–blue sensors and an Arduino® board. A linear response from 0.1 to 0.6 μmol L−1 manganese (limit of detection: 0.1 μmol L−1) was observed. The signal for strips prepared on 7 d gave a relative standard deviation equal to 13%. The strips showed good agreement with results obtained by ICP-MS in porewater collected on Spiekeroog Island (North Sea). Therefore, the method is a tool for rapid measurements of manganese in porewater samples offering new possibilities in understanding biogeochemistry for high temporal and spatial resolution manganese surveys and providing an analytical technique that provides field results comparable to laboratory systems.","PeriodicalId":18145,"journal":{"name":"Limnology and Oceanography: Methods","volume":"22 7","pages":"484-494"},"PeriodicalIF":2.1000,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lom3.10615","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Limnology and Oceanography: Methods","FirstCategoryId":"89","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/lom3.10615","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"LIMNOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

Simple and economical colorimetric strips for measuring manganese (Mn) in natural waters are described. For their construction, leucomalachite green (LMG) embedded in a Nafion® polymeric matrix was immobilized on a polyvinylchloride surface. Upon immersing the strips in the sample, any soluble manganese(II/III) present catalyzed the oxidation of the LMG base to malachite green by adding sodium periodate. The observed color change is related to the manganese concentration and can be quantified using a field device constructed using commercial red–green–blue sensors and an Arduino® board. A linear response from 0.1 to 0.6 μmol L⁻¹ manganese (limit of detection: 0.1 μmol L⁻¹) was observed. The signal for strips prepared on 7 d gave a relative standard deviation equal to 13%. The strips showed good agreement with results obtained by ICP-MS in porewater collected on Spiekeroog Island (North Sea). Therefore, the method is a tool for rapid measurements of manganese in porewater samples offering new possibilities in understanding biogeochemistry for high temporal and spatial resolution manganese surveys and providing an analytical technique that provides field results comparable to laboratory systems.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

用于定量测定孔隙水样本中总锰含量的比色传感条，操作简单、价格低廉

本文介绍了用于测量天然水体中锰（Mn）含量的简单而经济的比色条。在制作过程中，将嵌入 Nafion® 聚合物基质中的白芒硝绿（LMG）固定在聚氯乙烯表面。将条带浸入样品后，加入高碘酸钠，存在的任何可溶性锰（II/III）都会催化 LMG 碱氧化成孔雀石绿。观察到的颜色变化与锰浓度有关，并可通过使用商用红-绿-蓝传感器和 Arduino® 板构建的现场设备进行量化。观察到从 0.1 到 0.6 μmol L-1 锰的线性响应（检测限：0.1 μmol L-1）。7 d 制备的试纸条信号的相对标准偏差为 13%。在 Spiekeroog 岛（北海）采集的孔隙水中，条带与 ICP-MS 的结果显示出良好的一致性。因此，该方法是一种快速测量孔隙水样本中锰含量的工具，为了解生物地球化学提供了新的可能性，可用于高时间和空间分辨率的锰调查，并提供一种可与实验室系统相媲美的现场结果分析技术。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Limnology and Oceanography: Methods 地学-海洋学

CiteScore

4.80

自引率

3.70%

发文量

审稿时长

3 months

期刊介绍： Limnology and Oceanography: Methods (ISSN 1541-5856) is a companion to ASLO''s top-rated journal Limnology and Oceanography, and articles are held to the same high standards. In order to provide the most rapid publication consistent with high standards, Limnology and Oceanography: Methods appears in electronic format only, and the entire submission and review system is online. Articles are posted as soon as they are accepted and formatted for publication. Limnology and Oceanography: Methods will consider manuscripts whose primary focus is methodological, and that deal with problems in the aquatic sciences. Manuscripts may present new measurement equipment, techniques for analyzing observations or samples, methods for understanding and interpreting information, analyses of metadata to examine the effectiveness of approaches, invited and contributed reviews and syntheses, and techniques for communicating and teaching in the aquatic sciences.