A Method Study on Determination of Sediment Content in Water Samples Based on Self-made Differential Pressure Device
[Objective] The method for quickly and accurately measuring sediment concentrations in water samples in the field based on differential pressure was studied. [Methods] Four soil types (including Lou soil, sandy soil, saline-alkali soil, and paddy soil) were chosen to prepare 11 water samples with di...
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Science Press
2022-08-01
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| Series: | Shuitu baochi tongbao |
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| Online Access: | http://stbctb.alljournal.com.cn/stbctben/article/abstract/20220422 |
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| author | Xu Feifei Wang Jian Chen Lin Zou Yi Yang Chang Li Jiande |
| author_facet | Xu Feifei Wang Jian Chen Lin Zou Yi Yang Chang Li Jiande |
| author_sort | Xu Feifei |
| collection | DOAJ |
| description | [Objective] The method for quickly and accurately measuring sediment concentrations in water samples in the field based on differential pressure was studied. [Methods] Four soil types (including Lou soil, sandy soil, saline-alkali soil, and paddy soil) were chosen to prepare 11 water samples with different sediment concentrations based on the principle of pressure difference. The pressure difference between a water sample and the atmosphere was determined by using digital differential pressure meter (abbreviated as pressure difference) in order to establish the relationship between sediment concentration and pressure difference. [Results] Sediment concentration and pressure difference were linearly and positively correlated (significant at p=0.01). The method of pressure difference combined with a theoretical formula to determine sediment concentration was feasible for three of the water samples (including the Lou soil water sample, the sandy soil water sample, and the paddy soil water sample), and the absolute value of the maximum relative error was less than 15%. However, the method was not suitable for the sandy soil water sample. The absolute value of the maximum relative error in the determination of sediment concentration for the sandy soil water sample was as high as 39%. Therefore, to reduce the error, a correction equation was established by determining the pressure difference between pure water and water samples with sediment content of 500 kg/m3, and then combined with the measured pressure difference to calculate the sediment concentration. The absolute value of the maximum relative error was found to be less than 8%. [Conclusion] This method can accurately determine the sediment concentrations of water samples. It could provide a new way for conveniently determining sediment concentration in the field for soil and water conservation monitoring. |
| format | Article |
| id | doaj-art-6ae34527ce334c7bb41c5ec85a655e07 |
| institution | Kabale University |
| issn | 1000-288X |
| language | zho |
| publishDate | 2022-08-01 |
| publisher | Science Press |
| record_format | Article |
| series | Shuitu baochi tongbao |
| spelling | doaj-art-6ae34527ce334c7bb41c5ec85a655e072024-12-27T10:28:08ZzhoScience PressShuitu baochi tongbao1000-288X2022-08-0142417217810.13961/j.cnki.stbctb.2022.04.0221000-288X(2022)04-0172-07A Method Study on Determination of Sediment Content in Water Samples Based on Self-made Differential Pressure DeviceXu Feifei0Wang Jian1Chen Lin2Zou Yi3Yang Chang4Li Jiande5Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, ChinaCollege of Resource and Environment, Northwest A& F University, Yangling, Shaanxi 712100, ChinaInstitute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, ChinaCollege of Urban and Environmental Sciences, Peking University, Beijing 100871, ChinaInstitute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, ChinaInstitute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, China[Objective] The method for quickly and accurately measuring sediment concentrations in water samples in the field based on differential pressure was studied. [Methods] Four soil types (including Lou soil, sandy soil, saline-alkali soil, and paddy soil) were chosen to prepare 11 water samples with different sediment concentrations based on the principle of pressure difference. The pressure difference between a water sample and the atmosphere was determined by using digital differential pressure meter (abbreviated as pressure difference) in order to establish the relationship between sediment concentration and pressure difference. [Results] Sediment concentration and pressure difference were linearly and positively correlated (significant at p=0.01). The method of pressure difference combined with a theoretical formula to determine sediment concentration was feasible for three of the water samples (including the Lou soil water sample, the sandy soil water sample, and the paddy soil water sample), and the absolute value of the maximum relative error was less than 15%. However, the method was not suitable for the sandy soil water sample. The absolute value of the maximum relative error in the determination of sediment concentration for the sandy soil water sample was as high as 39%. Therefore, to reduce the error, a correction equation was established by determining the pressure difference between pure water and water samples with sediment content of 500 kg/m3, and then combined with the measured pressure difference to calculate the sediment concentration. The absolute value of the maximum relative error was found to be less than 8%. [Conclusion] This method can accurately determine the sediment concentrations of water samples. It could provide a new way for conveniently determining sediment concentration in the field for soil and water conservation monitoring.http://stbctb.alljournal.com.cn/stbctben/article/abstract/20220422pressure differencewater samplesediment concentrationdigital differential pressure gaugeliquid density |
| spellingShingle | Xu Feifei Wang Jian Chen Lin Zou Yi Yang Chang Li Jiande A Method Study on Determination of Sediment Content in Water Samples Based on Self-made Differential Pressure Device Shuitu baochi tongbao pressure difference water sample sediment concentration digital differential pressure gauge liquid density |
| title | A Method Study on Determination of Sediment Content in Water Samples Based on Self-made Differential Pressure Device |
| title_full | A Method Study on Determination of Sediment Content in Water Samples Based on Self-made Differential Pressure Device |
| title_fullStr | A Method Study on Determination of Sediment Content in Water Samples Based on Self-made Differential Pressure Device |
| title_full_unstemmed | A Method Study on Determination of Sediment Content in Water Samples Based on Self-made Differential Pressure Device |
| title_short | A Method Study on Determination of Sediment Content in Water Samples Based on Self-made Differential Pressure Device |
| title_sort | method study on determination of sediment content in water samples based on self made differential pressure device |
| topic | pressure difference water sample sediment concentration digital differential pressure gauge liquid density |
| url | http://stbctb.alljournal.com.cn/stbctben/article/abstract/20220422 |
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