| Concentrated and gastight sampling technique of deepsea microplankton |
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| 作者姓名： | 黄中华 刘少军 金波 李力 陈鹰 |
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| 作者单位： | School of Mechanical and Electrical Engineering Central South University，School of Mechanical and Electrical Engineering Central South University，National Key Laboratory of Fluid Power Transmission and Control Zhejiang University，School of Mechanical and Electrical Engineering Central South University，National Key Laboratory of Fluid Power Transmission and Control Zhejiang University，Changsha 410083 China，Changsha 410083 China，Hangzhou 310027 China，Changsha 410083 China，Hangzhou 310027 China |
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| 基金项目： | 中南大学校科研和教改项目 |
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| 摘 要： | A new sampling method of deepsea microplankton with function of in-situ concentrated sampling and gastight sampling was proposed. In-situ concentrated sampling technique was realized as follows: a microplankton membrane was used as filtration membrane, and a deepsea pump was used to pump seawater; the microplankton was captured and the density of microplankton was increased when seawater flow through the filtration membrane. Gastight sampling technique was realized as follows: a precharged accumulator was used as pressure compensator. During the process of lifting the sampler, the accumulator compensated the pressure drop continuously. The laboratory experimental results show that with in-situ concentrated sampling technique, in-situ concentrated sampling can be realized and the maximum concentration ratio reaches up to 500. With pressure compensation technique based on accumulator, gastight sampling can be realized. When sampling at 6 km and the precharge pressure of accumulator is 18 MPa, pressure drop of the sample is less than 2% compared with its original pressure. Deepsea experiment (at 1.9 km) results show that the sampler can realize in-situ concentrated sampling and gastight sampling.
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| 关 键 词： | 采样器 集中采样 浮游生物 过滤膜 |
| 收稿时间： | 2 March 2007 |
| 修稿时间： | 2007-03-02 |
Concentrated and gastight sampling technique of deepsea microplankton |
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| Huang Zhong-hua , Liu Shao-jun , Jin Bo , Li Li and Chen Ying.Concentrated and gastight sampling technique of deepsea microplankton[J].Journal of Central South University of Technology,2007,14(6):820-825. |
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| Authors: | Huang Zhong-hua Liu Shao-jun Jin Bo Li Li and Chen Ying |
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| Affiliation: | 1. School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China; 2. National Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | A new sampling method of deepsea microplankton with function of in-situ concentrated sampling and gastight sampling was proposed. In-situ concentrated sampling technique was realized as follows: a microplankton membrane was used as filtration membrane, and a deepsea pump was used to pump seawater; the microplankton was captured and the density of microplankton was increased when seawater flow through the filtration membrane. Gastight sampling technique was realized as follows: a precharged accumulator was used as pressure compensator. During the process of lifting the sampler, the accumulator compensated the pressure drop continuously. The laboratory experimental results show that with in-situ concentrated sampling technique, in-situ concentrated sampling can be realized and the maximum concentration ratio reaches up to 500. With pressure compensation technique based on accumulator, gastight sampling can be realized. When sampling at 6 km and the precharge pressure of accumulator is 18 MPa, pressure drop of the sample is less than 2% compared with its original pressure. Deepsea experiment (at 1.9 km) results show that the sampler can realize in-situ concentrated sampling and gastight sampling. |
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| Keywords: | sampler concentrated sampling gastight sampling deepsea microplankton |
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