Claims
- 1. Method for the batch preparation of sample aliquots by solvent extraction and separation of soluble species from sample comprising nonsoluble particulate, which comprises:
- (a) adding a batch quantity of said sample to a receptacle having a sample receiving space which communicates with a fluid-permeable filter, the filter being disposed remotely from the sample;
- (b) adding a batch quantity of liquid solvent to the sample receiving space;
- (c) injecting a stream of pressurized gas into the sample receiving space to slurry the solvent with the sample;
- (d) inverting the sample receptacle to transfer the slurry into filtering contact with the filter;
- (e) filtering the liquid phase of the slurry through the filter, and
- (f) collecting a metered amount of the filtered liquid phase to prepare a sample aliquot containing dissolved species extracted from the sample.
- 2. The method of claim 1, wherein the solvent is added to the sample receiving space by the addition of a metered quantity of solvent to said stream of pressurized gas.
- 3. The method of claim 2, wherein step (e) includes using positive gas pressure in the sample receiving space to pneumatically assist the filtration of the liquid phase of the slurry.
Parent Case Info
This is a continuation of application Ser. No. 423,343 filed Sept. 24, 1982, which was a cont. of application Ser. No. 220,551, filed Dec. 29, 1980 each abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3249403 |
Bochinski et al. |
May 1966 |
|
3790347 |
Fletcher et al. |
Feb 1974 |
|
4148610 |
Miller, Jr. et al. |
Apr 1979 |
|
Continuations (2)
|
Number |
Date |
Country |
Parent |
423343 |
Sep 1982 |
|
Parent |
220551 |
Dec 1980 |
|