Development of FBG salinity sensor coated with lamellar polyimide and experimental study on salinity measurement of gravel aquifer

盐度 海水 含水层 材料科学 重复性 岩土工程 环境科学 土壤科学 地质学 遥感 水文学(农业) 地下水 化学 色谱法 海洋学
作者
Mengya Sun,Hongtao Jiang,Bin Shi,Guyu Zhou,Hilary I. Inyang,Chen-Xi Feng
出处
期刊:Measurement [Elsevier]
卷期号:140: 526-537 被引量:58
标识
DOI:10.1016/j.measurement.2019.03.020
摘要

Under the influence of climate warming, sea level rise and human activities, seawater intrusion has become a significant problem. Seawater intrusion salinates groundwater and impacts on ecological environment and society. It needs to be monitored to scale to environment in order to develop and implement preventive or remedial measures. In-situ large-scale monitoring of groundwater salinity is a key step in the prevention of seawater intrusion. However, current monitoring technologies are either too labor-intensive or excessively expensive when used in large-scale in-situ monitoring. Optical fiber techniques that are presently used in measurements of salinity are mostly limited to laboratory experiments. Herein, a fiber Bragg grating (FBG) salinity sensor for in-situ monitoring of groundwater salinity is proposed. The sensor is composed of a FBG coated with polyimide (PI) and an uncoated FBG for salinity sensing and temperature compensation. On the basis of feasibility test and analyses using water diffusion model, a mathematical matrix for calculating salinity and temperature is proposed and applied to salinity measurement in gravel aquifers. The results indicate that the sensitivity coefficients of FBG coated with lamellar polyimide, to water salinity and temperature, are −0.0358 nm/%, 0.0321 nm/°C, respectively. The uncoated FBG is only sensitive to temperature, and the sensitivity coefficient is 0.0095 nm/%. The results of gravel aquifer measurements show that the FBG salinity sensor has good repeatability and consistency with measurements obtained with an electronic salinity meter. The absolute and RMS errors of the salinity measurements are −0.16 to 0.21%, 0.1048%, respectively, and the absolute and RMS errors of temperature are −0.31 to 0.33 °C, 0.1917 °C, respectively. The FBG salinity sensor provides a new means for in-situ monitoring of seawater intrusion.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
1秒前
2秒前
啁啾发布了新的文献求助50
3秒前
菲菲完成签到,获得积分10
3秒前
xue112发布了新的文献求助50
3秒前
Woo完成签到,获得积分20
5秒前
5秒前
曾曾完成签到,获得积分10
6秒前
科研冲发布了新的文献求助10
6秒前
为你博弈完成签到,获得积分10
6秒前
马外奥发布了新的文献求助10
6秒前
无花果应助霸气的梦露采纳,获得10
6秒前
研友_Lw44Gn完成签到,获得积分0
7秒前
常常完成签到,获得积分10
7秒前
Woo发布了新的文献求助10
8秒前
8秒前
9秒前
珊珊完成签到 ,获得积分10
9秒前
zzx发布了新的文献求助10
9秒前
36456657应助杰奥采纳,获得10
9秒前
努力写论文的程序猿完成签到,获得积分20
11秒前
Jasper应助英俊小美采纳,获得10
11秒前
Lucas应助柯柯采纳,获得10
12秒前
12秒前
13秒前
caspianhuang完成签到,获得积分10
13秒前
小马甲应助saber采纳,获得10
13秒前
雨凇发布了新的文献求助10
13秒前
华仔应助zzx采纳,获得10
13秒前
wr781586完成签到 ,获得积分10
14秒前
6188发布了新的文献求助10
15秒前
sw98318完成签到,获得积分10
15秒前
16秒前
iNk应助佳佳采纳,获得20
16秒前
18秒前
wangjy发布了新的文献求助10
19秒前
19秒前
caspianhuang发布了新的文献求助10
19秒前
星辰大海应助naturehome采纳,获得10
19秒前
乔木完成签到,获得积分10
20秒前
高分求助中
Licensing Deals in Pharmaceuticals 2019-2024 3000
Cognitive Paradigms in Knowledge Organisation 2000
Effect of reactor temperature on FCC yield 2000
Introduction to Spectroscopic Ellipsometry of Thin Film Materials Instrumentation, Data Analysis, and Applications 1200
How Maoism Was Made: Reconstructing China, 1949-1965 800
Medical technology industry in China 600
中国内窥镜润滑剂行业市场占有率及投资前景预测分析报告 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3311845
求助须知:如何正确求助?哪些是违规求助? 2944668
关于积分的说明 8520492
捐赠科研通 2620270
什么是DOI,文献DOI怎么找? 1432725
科研通“疑难数据库(出版商)”最低求助积分说明 664756
邀请新用户注册赠送积分活动 650053