发明名称 |
Sequential, time-integrated collector of precipitation, ground water, and surface water for analysis of isotopes |
摘要 |
A sequential, time-integrated collector having an electronic controller that actuates either of two electrically-actuated valves, each connected to a water reservoir. At a preset time interval (e.g., every 30 minutes), time-integrated water samples are transferred into sample vials in a multi-sample carousel. Evaporation that could change the isotopic composition of a precipitation sample is minimized by sealing the opening of each sample vial by pressing each vial against a flat, low-friction surface, such as a Teflon® sheet, from the time each sample vial is filled until it is removed from the collector.
|
申请公布号 |
US7687028(B1) |
申请公布日期 |
2010.03.30 |
申请号 |
US20060401010 |
申请日期 |
2006.04.06 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE INTERIOR |
发明人 |
COPLEN, II TYLER BENJAMIN |
分类号 |
B01D61/18;G01N1/34 |
主分类号 |
B01D61/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|