Technology - VisiFibre

VisiFibre

Our Solution

1. Sampling Process

1.1. COLLECTING SAMPLES

1.1 Collecting the Samples Setup

A filter is placed over the support connected to an air sampling pump, positioned on tables in the worker area. Process: The air pump absorbs air, leaving microplastics adhered to the filter. Transportation: Filters are carefully removed using a mobile tray and transported from the worker room to the control room.

1.2 Sampling Time and Volume

Duration: Aim for 1.5 hours of air aspiration.
Adjustments: 1 filter per 3 people, with the total time ranging between 1 to 2.5 hours.
Filter Specifications: Material – Polycarbonate coated with aluminum; Porosity – 5-6 µm.

1.3 Sample Collection Schedule

Weekly Schedule: Detailed daily time slots from Monday to Friday.
Room Capacity Considerations: Maximum of 3 Pipe 4.0 devices for larger rooms.

2. Pre-Raman Analysis Techniques

2.1 Weaknesses of Raman Analysis

Weak Raman signal and fluorescence interference due to impurities and additives.
Manual detection challenges using an optical microscope leading to possible false positives/negatives.

2.2 Presampling Solutions

Utilization of non-linear Raman techniques and cleaning protocols.
Photo-bleaching and algorithms to mitigate fluorescing agents.
Advanced image analysis software for particle detection.

3. Raman Spectroscopy Technologies

3.1 What is Raman Spectroscopy?

A non-destructive technique for chemical composition and molecular structure analysis.
Inelastic scattering of light (Raman effect) identifies molecules.

3.2 Basic Working Principles

Interaction: Incident light causes molecular vibrations.
Scattering: Changes in scattered light energy reveal molecular features.
Spectrum Analysis: X-Axis (Raman Shift), Y-Axis (Signal Intensity), Peaks (molecular vibrations).

3.3 Interpretation and Applications

Material and contaminant identification.
Analysis of polymers and plastics.
Research in nanotechnology and material sciences.

4. Pipe 4.0 Adaptation (microRaman for Solids)

4.1 Adjustments for Solid Samples

Modifications to accommodate the specific requirements for solid sample analysis.