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首页> 外文期刊>Journal of Hydrology >The use of electrical conductivity to develop temporally precise breakthrough curves in tracer injection experiments
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The use of electrical conductivity to develop temporally precise breakthrough curves in tracer injection experiments

机译：使用电导率在跟踪器注射实验中开发时间上的时间上精确的突破性曲线

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摘要

Tracer injection is a common technique in the studies of chemical transport in streams and channels. One of its limitations is the requirement of frequent sampling for representative tracer breakthrough data. Frequent collection and analysis of water samples are normally expensive and time-consuming. The measurement of electrical conductivity (EC) is a potential alternative to sample collection and analyses, because of its ease of data acquisition. But whether the EC value can characterize the injected solute concentration requires further evaluation. This article assesses the ability of EC to predict solute concentrations in tracer injections. Two injection studies were conducted in two separate flumes: an instantaneous injection of phosphorus (P) and bromide (Br) in a 20-m flume and a constant injection of Pin a 10-m flume. Water samples were collected intensively at multiple locations and EC was automatically and continuously recorded. Using a linear model, a solute breakthrough was calculated based on recorded EC and compared to the measured solute concentrations.
机译：示踪剂注射是流动和通道中化学传输研究中的常用技术。其中一个限制是需要频繁采样代表示踪突破性数据。频繁的收集和分析水样通常昂贵且耗时。电导率（EC）的测量是对采集和分析的潜在替代方案，因为它易于数据采集。但EC值是否可以表征注入的溶质浓度需要进一步评估。本文评估了EC预测示踪剂注射中溶质浓度的能力。在两个单独的水下进行两次注射研究：在20米的Flume中瞬时注射磷（P）和溴化物（Br），并恒定地注入销A 10米的Flume。水样在多个位置，在多个位置，EC自动并持续记录。使用线性模型，基于记录的EC计算溶质突破，并与测量的溶质浓度相比。

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