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Homepage > Applications > best@buchi

Applications

best@buchi

Trace Analysis of PAHs using the Extraction System B-811

Best_Buchi_51_PAH_V6_low.pdf

The Extraction System B-811 and the Syncore Analyst parallel concentrator from Buchi as well as the Pressurized Solvent Extractor from Applied Separations were evaluated for the pretreatment of samples containing PAHs. Recoveries of extraction and subsequent concentration using acetone+n-hexane (1+1) were 70-95% for 2 ring and 90-100% for the less volatile 3-5 ring PAHs. A good precision (95% confidence level) of less than 6%, naphtalene excluded (12%), was found. No significant difference was observed between the two extraction methods.

380 K

Extraction System B-811

best_buch_50_Extraction_System_B_811_Low.pdf

We are presenting the use of Büchi’s Extraction Unit B-811 for isolating polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/F) from solid environmental samples (soil, grass) under standard conditions and by means of hot extraction. The extracts received will be further processed by means of an internationally recognized method [1] and analyzed with high-resolution GC/MS in the single-ion monitoring (SIM) mode

258 K

A compilation of various methods for protein

Best_Buchi_49_Milk_Kjeldahl_LOW.pdf

There are only few foodstuffs that are as closely connected to the history of mankind as milk. Domestic cows for milking were kept already in the 5th millenium B.C. and in India cows are considered holy to this day.

196 K

Determination of airborne mineral oils: an inter-laboratory comparison

Best_Buchi_48_SUVA_low.pdf

Metalworking fluid aerosols, largely used in the Swiss watch making industry, are known to cause various respiratory ailments such as e.g. bronchitis and asthma. There are various techniques available to determine the concentration of airborne oil mists. The Syncore® Polyvap was scrutinized with respect to reliability and reproducibility in an interlaboraty comparison with five independent analytical Swiss laboratories using four different methodologies yielding excellent results and time savings compared to conventional evaporation methods. Find out more.

285 K

Comparison between Soxhlet and Hot Extraction using the Extraction Units E-812/E-816

Best_buchi_47_Soxlet_Hot_Extraction_E-812_816_en_LOW.pdf

Automated Soxhlet and Hot Extraction for fast and reliable fat determination in Feed and Feed.

702 K

Spray Dried Biodegradable Polymers as target

Best_Buchi_46_Spray_dried_biodegradable_polymers_low.pdf

Controlled Drug Release from spray dried polylactide-co-glycolide particles.

1.1 M

Quantification of 3,4-dichloroaniline, 3,5-dichloroaniline and 4-chloroaniline as residues of selected pesticides

Best_Buchi_45_DistillationUnit_B-324_en.pdf

As alternative to the classical Hemmerling method a Distillation Unit B-324 from Buchi was used offering an easier and more simple sample handling.

3.6 M

Freeze drying with enhanced process control in the Glass Oven B-585

Best_Buchi_44_B-585_Freeze_drying_6_seiter_en_low.pdf

Freeze drying (also known as lyophilization) is a well known technique to improve stabilization of active pharmaceutical ingredients (API) during long term storage.

640 K

Determination of the pear content in apple juice

Best_buchi_Nr43_EN.pdf

By means of an SPE-cartridge module for the Syncore® Analyst the process flow for determining the quality of apple juices is optimized.

322 K

Use of Near Infrared Spectroscopy in quality control of green Rooibos and Honeybush

BestBuchi41_Rooibos_Honeybush_6seit.pdf

The growing interest in natural plant products by the nutraceutical and cosmetic industries resulted in a large number of polyphenolenriched extracts on the market.

564 K

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last modified: April 25 2008
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