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Published (Version of record)CC BY-NC-ND V4.0, Open Access
Published (Version of record)CC BY-NC-ND V4.0, Open
Journal article
Portable open-source autosampler for shallow waters
HardwareX, Vol.8, p.e00142
01/10/2020
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Abstract
Automated water sampling can be very useful, but open-source choices are limited. Here I present an autosampler which consists of a gantry robot that delivers water from a syringe pump to 24 capped 40 ml vials. The autosampler is controlled using an Android tablet automatized using Macrodroid. Three rinsing cycles ensure negligible carryover between consecutive samples. Hourly sampling from a creek under rainy conditions suggested that total organic carbon in water was diluted by the rain. Some important limitations: 1) the autosampler must be on a steady, flat, horizontal surface; 2) unattended sampling can only last as long as the batteries powering the tablet and the motors; 3) distance from the syringe pump to water cannot exceed ~2 m in height and ~4 m in length for 3 mm tubing; 4) sampling frequency does not exceed one sample every eleven minutes. However, because of its open design, the autosampler can be modified and improved to not only overcome these limitations, but also potentially expand its scope to more demanding sampling if necessary.
Details
- Title
- Portable open-source autosampler for shallow waters
- Creators
- Matheus C Carvalho - Southern Cross University, Environmental Analysis Laboratory
- Publication Details
- HardwareX, Vol.8, p.e00142
- Publisher
- Elsevier Ltd
- Identifiers
- 991012928099602368
- Academic Unit
- Centre for Coastal Biogeochemistry; Environmental Analysis Laboratory
- Language
- English
- Resource Type
- Journal article