Pesticide grade Florisil SPE ColumnProvided by Shanghai Shupei Experimental Equipment Co., Ltd., Florisil, a pesticide residue grade adsorbent activated at 675 ℃, is a highly polar and active porous adsorbent that can adsorb low polarity and medium polarity target compounds, such as organic pesticides containing chlorine, nitrogen, and phosphorus. In pesticide residue detection, Florisil column has good performance and low cost, and is adopted by the US EPA 608 method and the Chinese Ministry of Agriculture NY/T 761 method.

Equivalent to Waters Sep Pak Florisil

Pesticide grade Florisil SPE ColumnFeatures: Good retention for most pesticides, low cost of use

Parameters: Particle size: 150-250 μ m

Application:

Detecting residues of organochlorine pesticides, organophosphorus pesticides, and fungal toxins in food

Detecting endocrine disruptors and pesticide residues in environmental samples

Analyze fatty acids in oils and fats

Enrichment of metal ions

Pesticide grade Florisil SPE ColumnIntroduction:

Related standards:

EPA 608 Detection of Organochlorine Insecticides and Polychlorinated Biphenyls

NY/T 761 Part II Determination of Organochlorine and Pyrethroid Pesticide Residues in Vegetables and Fruits

NY/T 1720-2009 Determination of Benzoylurea Pesticide Residues in Fruits and Vegetables by High Performance Liquid Chromatography

SN/T 0134-2010 Method for detecting residues of 12 types of amino acid ester pesticides, including carbendazim, in imported and exported food by liquid chromatography-mass spectrometry

HJ 715-2014 Determination of Polychlorinated Biphenyls in Water Quality Gas Chromatography Mass Spectrometry Method

HJ 743-2015 Soil and sediment - Determination of polychlorinated biphenyls - Gas chromatography-mass spectrometry method

Overview of Solid Phase Extraction (SPE) Column: Solid phase extraction (SPE) is the process of using solid adsorbents to adsorb target compounds from liquid samples, separate them from the sample matrix and interfering compounds, and then elute with eluent or desorb by heating to achieve the separation and enrichment of target compounds.

It utilizes the poor adsorption ability of analytes in different media to purify the target substance, effectively separating it from interfering components, greatly enhancing the detection ability of analytes, especially trace analytes, and improving the recovery rate of the tested sample.

Since its emergence in the late 1970s, SPE technology has developed rapidly and is widely used in fields such as environment, pharmaceuticals, clinical medicine, and food. Solid phase extraction, as a sample pretreatment technique, has been increasingly widely used in laboratories.

SPE column classification:
SPE columns are classified into the following three categories based on their mechanism of action.

1. The adsorbents used in solid-phase extraction are polar, depending on the interactions between the polar functional groups of the target compound and the polar functional groups on the adsorbent surface, including hydrogen bonding, π - π bond interactions, dipole dipole interactions, dipole induced dipole interactions, and other polarity polarity interactions.

The adsorbents and target compounds used in reverse phase solid-phase extraction are usually non-polar or weakly polar, mainly relying on non-polar non-polar interactions, such as van der Waals forces or dispersion forces.

3. Ion exchange solid-phase extraction relies on the electrostatic attraction between the target compound and the adsorbent.

The operation steps vary slightly depending on the different mechanisms of filler retention (whether the filler retains the target compound or impurities). 1. The solid-phase extraction operation of retaining the target compound with fillers generally involves four steps (see Figure 1):
(1) Activation - Remove impurities from the small column and create a certain solvent environment.
(2) Sample loading - Dissolve the sample in a certain solvent, transfer it into the column, and keep the components on the column.
(3) Rinse - remove interfering substances.
(4) Elution - Use a small volume of solvent to elute the test substance and collect it.

SPE Column Series Products

1. SPE column tubes are all made of medical grade polypropylene through one-time molding; The sieve plates are all made of ultra-high molecular weight polyethylene by high-temperature sintering; Multiple models to choose from; We can provide customized services according to customer needs; Enable customers to enjoy a higher quality service experience.

2. Classic silicone based SPE column: amorphous/spherical adsorbent, providing a comprehensive solution with excellent cost-effectiveness and stability. Mature for food testing.

3. Polymer SPE column: Using spherical polymers as adsorbents, equivalent to Waters' HLB, MAX, and MCX, it has been maturely used for food detection. The filler particle size is more uniform, the SPE column flow rate is more stable, and it is a classic polymer application column in the laboratory.

4. Azo dye specific detection column: using the purest diatomaceous earth filler; Unique sieve plate flow rate control technology, meeting national standards, tested by authoritative institutions, and supplied by OEM.

5. Plasticizer specific testing column: High quality PSA packing, specialized glass column tube, PTFE sieve plate, no interfering substances or impurities, meeting national standards, tested by authoritative institutions, and supplied by OEM.

6. Aflatoxin affinity chromatography column: Aflatoxin B1 and M1 immune affinity dedicated columns.