AN1112: Determination of Anions in Breast Milk

Instrument Type: ICMS

Breast milk is the primary source of nutrition for newborns before they are able to eat and digest other foods, so there is a close correlation between breast milk quality and infant health. In addition to proteins and vitamins, the ionic elements such as sodium, potassium, calcium, magnesium, chloride, and nitrate in breast milk also are important for infant health. However, consumption of breast milk that contains a high concentration of these ions could lead to health issues. IC is an efficient means to determine anions. An ICS-6000 can be used for this application.

Analysis of Dithiocarbamate Pesticides by GC-MS

Instrument Type: GCMS

The class of dithiocarbamate fungicides (DTCs) is widely used in agriculture. They are non-systemic and both the formulation and their break-down products typically remain at the site of application. DTCs exhibit a broad spectrum of activity against various plant pathogens, low acute mammal toxicity, and low production costs. DTC are highly unstable so they can be quantitatively converted to carbon disulphide by reaction with tin(II)chloride in aqueous HCl (1 : 1) at 80 °C. The CS2 gas produced is absorbed into iso-octane and measured by GC-MS as described in this application.

AN269: Identification and Quantification at ppb Levels of Common Cations and Amines by IC-MS

Instrument Type: ICMS

The work shown here demonstrates the use of IC-MS for the determination of six commonly found cations and selected amines on an IonPac CS12A-5µm column. Confirmatory information was obtained using full-scan MS spectra showing positively charged cation species and characteristic adduct patterns. Quantification was achieved using selected ion monitoring (SIM) acquisitions for each target analyte.

AN276: Direct Determination of Fluoroacetate in Water by IC-MS

Instrument Type: IC

This study undertook an investigation to quantify fluoroacetate, a metabolic poison, in fortified drinking water without prior derivatization or sample pretreatment. An ion chromatography (IC) method was developed with an MS detector.