平面光極技術(shù)在水土環(huán)境精細(xì)化檢測(cè)中的應(yīng)用：實(shí)時(shí)捕獲DO/pH/CO2的微區(qū)變化

       平面光極技術(shù)（PO）基于光電和熒光分析技術(shù)，可原位、實(shí)時(shí)獲取環(huán)境指標(biāo)的高分辨信息。在激發(fā)光照射下，光敏物質(zhì)與分析物相互作用并伴隨熒光信號(hào)（如：強(qiáng)度、壽命）變化，利用數(shù)字成像技術(shù)實(shí)時(shí)記錄其二維特征發(fā)射光譜，將被測(cè)物質(zhì)的濃度進(jìn)行可視化呈現(xiàn)，分辨率可達(dá)亞毫米。

平面光極結(jié)構(gòu)圖

配套耗材

平面光極測(cè)量?jī)?yōu)勢(shì)

1、實(shí)時(shí)、快速地獲取微區(qū)DO/pH/CO2的分布；非侵入性成像測(cè)量，不破壞原生環(huán)境；

2、配備1250w(便攜式)/2000w(封閉式)像素的CMOS相機(jī)，實(shí)現(xiàn)時(shí)間分辨率毫秒，空間分辨率亞毫米；

3、PO2100設(shè)備自帶封閉式箱體，滿足測(cè)定所需的暗室條件；

4、配套軟件集成校準(zhǔn)、獲取圖像、處理圖像于一體，操作簡(jiǎn)單；

5、與其他高分辨技術(shù)具有互補(bǔ)性。

設(shè)備分析軟件

實(shí)物場(chǎng)景及二維數(shù)據(jù)成像

案例一：苦草根際周圍CO2濃度的時(shí)空變化

案例二：藻類從生長(zhǎng)到分解過程中DO和pH的二維空間變化

案例三：隨光照強(qiáng)度增加，植物根際溶解氧的動(dòng)態(tài)變化

案例四：好氧、厭氧條件下溶解氧、pH的同步變化

案例五：底棲動(dòng)物間歇性活動(dòng)造成的水底土壤表層DO動(dòng)態(tài)變化

案例六：苦草根系附近CO2的二維空間分布

平面光極 ▏文獻(xiàn)導(dǎo)讀：

1. Cai Li, Shiming Ding, Xin Ma,, et al., Sediment arsenic remediation by submerged macrophytes via root-released O2 and microbe-mediated arsenic biotransformation, Journal of Hazardous Materials, Volume 449, 2023, 131006, ISSN 0304-3894, doi.org/10.1016/j.jhazmat.2023.131006.

2. Yao He, Na Ding, Guo Yu, et al., High-resolution imaging of O2 dynamics and metal solubilization in the rhizosphere of the hyperaccumulator Leersia hexandra Swartz, Journal of Hazardous Materials, Volume 455, 2023, 131580, ISSN 0304-3894, doi.org/10.1016/j.jhazmat.2023.131580.

3. Zhilin Zhong, Cai Li, Musong Chen, et al., The Root Tip of Submerged Plants: An Efficient Engine for Carbon Mineralization, Environ. Sci. Technol. Lett. 2023, 10, 4, 385–390, doi. org/10. 1021/acs. estlett. 3c00065

4. Juan Lin, Mengling Liu, Sunling Zhuang, et al., Effects on the migration and speciation of heavy metals by combined capping and biochemical oxidation during sediment remediation, Science of The Total Environment, Volume 871, 2023, 162055, ISSN 0048-9697, doi.org/10.1016/j.scitotenv.2023.162055.

5. Cai Li, Shiming Ding, Musong Chen, et al., Visualizing biogeochemical heterogeneity in soils and sediments: A review of advanced micro-scale sampling and imaging methods. Critical Reviews in Environmental Science and Technology, 2023, 53(12), 1229–1253. doi.org/10.1080/10643389.2022.2128239

6. Li, X.-Y., Li, X.-Y., Jiang, Y.-F, et al., High-resolution chemical imaging to understand Cd activation in rice rhizosphere of karstic soils. Chemosphere, 2024, 349(140988), 1-10. doi.org/10.1016/j.chemosphere.2023.140988

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