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Chemistry Research

RADIATION PROCESSING LABORATORY
The radiation processing facilities are capable of synthesizing specialized polymeric materials by radiation-induced crosslinking, degradation or grafting for biomedical, agricultural and environmental applications.  Instruments are also available for analysis or characterization of product properties (e.g. weight and number average molecular weight (Mw, Mn), thermal gravimetric analyzer (TG-DTA), fourier transform infrared spectroscopy (FTIR), tensile strength.
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Radioassay Laboratory
Radioassay
Purpose: This facility was established at the Chemistry Research Section for Radioligand Receptor Binding Assay (RBA)-  a method for  measuring red tide toxicity.   This method is based on the competitive binding between a radiolabeled toxin and the toxin present in the sample. In microplate format, it offers a rapid, reliable and sensitive method of saxitoxin detection.

For more information, please contact:

Chemistry  Research  Section
Atomic Research  Division
Tel:  Trunkline (+632) 929-6010 to 19 local 234/292/297
Direct Line: (+632) 920-1655
E-mail:

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Radiometric Dating Laboratory
Radiometric
Purpose: This sediment dating laboratory is available for studying the history of pollution in an area and in studying the sedimentation rate and processes in coastal areas, lakes, rivers and dams.  Lead-210 ( a naturally-occurring radionuclide)  and cesium-137 ( a fission fallout radionuclide)  are used in these studies. Lead-210 is determined by measurement of its daughter nuclide, polonium-210. The sediment dating laboratory uses alpha spectrometry in the measurement of alpha emitting radionuclides such as polonium-210.

For more information, please contact:

Chemistry  Research  Section
Atomic Research  Division
Tel:  Trunkline (+632) 929-6010 to 19 local 234/292/297
Direct Line: (+632) 920-1655
E-mail:
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Radioactivity Measurement Laboratory
Radioactivity
Purpose:

Detectors for a whole range of radionuclide identification and quantification by alpha, beta and gamma spectrometries are available and are actively used in the Chemistry Research Section.  There are fivefive  silicon surface barrier detectors (SSBD)  for alpha radioactivity measurement, two liquid scintillation counters for beta radioactivity measurements, one HPGe detector and one sodium iodide ( NaI) for gamma spectrometry.

These systems are currently used for low level radioactivity measurements in soil erosion/sedimentation studies and in toxicity assay for red tide toxin.

For more information, please contact:

Chemistry  Research  Section
Atomic Research  Division
Tel:  Trunkline (+632) 929-6010 to 19 local 234/292/297
Direct Line: (+632) 920-1655
E-mail:
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Radiation Crosslinking Laboratory
Crosslinking
Purpose: Radiation crosslinking is a process that covalently bonds one or more polymers imparting improved mechanical and functional properties. The Chemistry Research Section has the facility to synthesize cross-linked products with various applications such as hydrogel dressing for optimal wound healing, hemostat for control of blood loss and super water absorbent for water retention in agriculture.
For more information, please contact: Chemistry  Research  Section
Atomic Research  Division
Tel:  Trunkline (+632) 929-6010 to 19 local 234/292/297
Direct Line: (+632) 920-1655
E-mail:
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Radiation Degradation Laboratory
RadiationDegradation
Purpose: Long chain polymers can be cut down into lower molecular fragments by radiation degradation. This process can be used to reuse or recycle synthetic polymers to reduce environmental pollution. It can also reduce natural polymers into short-chain oligomers for plant uptake. The Radiation Degradation facility has the means to analyze degradation products by gel permeation chromatography and to separate different molecular weight fractions by tangential flow filtration.
For more information, please contact: Chemistry  Research  Section
Atomic Research  Division
Tel:  Trunkline (+632) 929-6010 to 19 local 234/292/297
Direct Line: (+632) 920-1655
E-mail:
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Radiation-Induced Graft Polymerization Laboratory
GraftPolymerization
Purpose: Graft polymerization is a valuable method for the modification of the chemical and physical properties of a material’s surface to incorporate advantageous newly tailored surface properties. The grafting laboratory of Chemistry Research Section has the facility to synthesize grafted polymers from different base materials (fibers, fabric, powders and films). Electron beam and gamma irradiation are used to create active sites for grafting.
For more information, please contact: Chemistry  Research  Section
Atomic Research  Division
Tel:  Trunkline (+632) 929-6010 to 19 local 234/292/297
Direct Line: (+632) 920-1655
E-mail:
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