CHEMILUMINESCENCE ANALYZER

Used plastic bottles collected for recycling

Studying and controlling quality degradation 

Highly sensitive diagnostic tests

Weather resistance evaluation

Polypropylene where subjected to light exposure testing and acceleration testing, with and without additives (HALS, UVA). The exposure where equivalent to approximately 2 months and 4 months.
The samples with additives showed only a slight difference compared to the samples without additives.

Evaluation of recycled Polypropylene (PP) pellets manufactured at different extrusion temperatures and cycle counts

The higher the recycling cycle count, the higher the amount of luminescence shown; slight oxidation due to recycling could be detected.

In contrast, in the physical property tests (the flexure test and tensile test), hardly any difference was observed.

Evaluation of Oxidation Induction Time (OIT)
Polypropylene (PP) pellets with different concentrations of additive (Irganox 1010)

The OIT became significantly longer for the pellets with 0.5% and 1% antioxidant additive compared to pure PP.

Luminescence spectrum during thermal oxidation of Polypropylene (PP) pellets
With oxidation, a long wavelength shift was observed in the peak position in the 400nm range, and an increase in intensity was observed in the long wavelength region of 550nm and above.

Evaluating the Light resistance of three different types of PP

Material compositions and the impact of additives on the light resistance can be measured by ultraweak chemiluminescence and Oxidation Induction Time (OIT) when samples are irradiated under light, e.g. xenon lamp.
The sample was found to have the longest OIT and the best light resistance. Such evaluation is possible in a few days of measurement.

Key words:

Recycled plastic, waste materials used plastic collection, recycle plant, sustainability, pollution control, plastic reuse, circular economy, environmental conservation

Quality degradation of stored rapeseed oil

The amount of luminescence was higher in the sample refrigerated for 2 years than in the new sample, and multiple luminescent components were observed by means of temperature elevation measurement

Quality degradation of stored beer

The longer the storage period, the more the chemiluminescence increased

Key words:

Quality degradation, oxidation, food control

Measurement of phospholipid hydroperoxides (PCOOH) in blood (catechins) / Catechin extract in plasma

The amount of PCOOH for subject a (several hundred femtomoles) was less than for subject b (several picomoles), and could be detected with good reproducibility. Lipid peroxides in human blood are an indicator of oxidative stress in the body.

Ultra sensitive fluorescence measurement of Haematoporphyrin

In contrast to the method using a general fluorescence spectrophotometer, this method enabled a calibration curve to be obtained to about 20fmol.

Key words:

Diagnostic, blood, oxidative stress, lipid peroxides