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Gasoline Range Organics (GRO) by Headspace GC-FID

Recent oil spills in the Gulf of Mexico and the Great Barrier Reef have renewed interest in the rapid analysis of crude oil by-products in aqueous and solid samples including sand and commercial fishing products. One of the crude oil constituents, gasoline range organics (GRO) is currently determined by either EPA Method 8015C1 or Wisconsin’s modified GRO2.

A SCION Instruments HT3 Headspace Analyzer was used in both the static and dynamic modes to determine GRO in water using the SCION 8300 platform. The static method was linear from 50 to 1000ppb and the dynamic from 2 to 200ppb. This calibration data meets the requirements for both EPA Method 8015C and Wisconsin’s modified GRO.


Determination of Furan in Coffee by Static and Dynamic Headspace/GC/MS

Furan is a highly volatile compound and is formed as a result of the thermal treatment during the roasting of coffee beans. Due to the toxicity and carcinogenicity of furan it is a necessary to determine the content of furan in food after thermal treatment. An easy way to determine furan is to use headspace sampling in association with GC-MS.


ASTM D7504 - Standard Test Method for Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography and Effective Carbon Number.

SCION Instruments offers the solution for trace impurities in monocyclic aromatic hydrocarbons by gas chromatography and effective carbon number.
After manufacturing products might contain impurities. The ASTM D7504 describes the determination of total nonaromatic hydrocarbons and monocyclic aromatic hydrocarbons in benzene, toluene, ethylbenzene, p-xylene, o-xylene, m-xylene and styrene. This method also calculates the purity of these components.


Two Headspace Solutions for the Analysis of Dissolved Gases in Water by Method RSKSOP-175

Dissolved gas analysis has been performed using a simplified headspace method following US EPA method RSKSOP-175. This method describes the preparation and analysis of dissolved gases in water.
Recent developments in natural gas drilling from deep underground shale formations, using techniques such as hydraulic fracturing, have renewed interest in this method to determine dissolved gases in water with headspace analysis.
This application note will demonstrate the versatility of SCION Instruments HT3 and Versa Automated Headspace Analyzers for determining dissolved gases in ground water samples. Methane, ethene, ethane, and propane were evaluated.


Achieving Low-Level Detection of Benzene in Beverages with an Automated Headspace Vial Sampler

Eight commercially available beverage samples were selected for low-level detection of benzene by static headspace analysis. This study will use the SCION Instruments HT3 Automated Headspace Vial Sampler to analyze parts per trillion (ppt) levels of benzene in beverages. A GC/MS system will be employed in full scan/SIM mode for separation and detection of benzene, as well as other volatile compounds.
The HT3 was capable of detecting 0.05 parts per billion (ppb) of benzene in the samples with excellent linearity from 0.05 to 20 ppb. The 0.05 ppb quantitation level achieved is 20 times lower than the European benzene drinking water requirement of 1 ppb.


Achieving ppt Levels of Environmental Volatiles with a New Headspace Sampler

This study focuses on the SCION Instruments Versa Automated Headspace Analyzer and its ability to analyze Volatile Organic Compounds (VOCs) in water at the part per trillion (ppt) level.
The European Union defines a VOC component as “any organic compound having an initial boiling point less than or equal to 250°C, measured at a standard atmospheric pressure of 101.3 kPa”. Many VOCs are man-made chemicals that are used and produced in different industries.
VOCs can be harmful to the human health, the effects can be direct or can be build up in the body to cause long-term health problems. Because of these health effects it is important to monitor the VOCs. SCION Instruments offers a perfect solution to measure these components even on ppt levels.


Comparison of BTEXS in Olive Oils by Static and Dynamic HT3 Headspace

The health benefits of consumption of olive oils as part of a healthy diet reaches back to the mid 1950’s. In the late 1990’s, interest in characterizing other components of olive oils included determining the concentration of benzene, toluene, ethylbenzene, xylenes and styrene (BTEXS). Some of these compounds are naturally occurring, while others may be introduced through the processing of olive oil.
The method suggested for the determination of BTEXS in olive oil is static headspace. This application note will reproduce some of the static parameters


Analysis of dioxins by GC-TQMS

Dioxins and Furans are among the most toxic chemicals and are classified as Persistent Organic Pollutants (POPs). Dioxins can invoke serious health effects in humans such as loss of body weight, hormone disruption, reproductive disorders, skin toxicity, immune system disorders and cancer, among other diseases. Since 2014, GC-MS/MS is an EU-accepted technique as confirmation method for dioxin analysis in accordance with EU 589/2014 and subsequent regulations implemented in this regard.
This Application Note shows the analytical performance of the SCION 8900 TQ GC-MS analysing dioxins in food, feed and environmental samples with confidence.


Multiplexed pesticide analysis by GC-TQMS

As plant protection products, pesticides may be used in food production (growth), storage, and transport. Traditional GC-TQMS analysis of multi-residue pesticides suffers from a lack of sensitivity when many compounds are analysed in a single run.

In this Application Note, we will explore the ultimate performance of the SCION 8900 GC-TQMS for the simultaneous analysis of 450 pesticides without loss of sensitivity or reproducibility


IP507 Determination of boiling range distribution of heavy distillate and residual fuel oils — Gas chromatography method

SCION Instruments offers a solution for a simulated distillation of heavy distillate and residual fuel oils, according to standardized method IP507. Simulated Gas chromatography distillations can be used for control of refining operations. Standardized method IP507 describes the determination of the boiling range distribution of heavy distillate and residual fuel oils, with initial boiling points (IBP) of at least 100°C and final boiling points of (FBP) above 750°C.