earticle

영어

It is crucial to detect blood on fabric as it can serve as important evidence for criminal investigation. However, when the blood volume is minimal or the fabric has been laundered, it becomes challenging to detect the bloodstain with the naked eye or even with the use of bloodstain enhancing reagents. Understanding the fabric's blood washing characteristics is essential when blood stains are not detected, as it helps determine the likelihood of fabric laundering. Factors influencing these characteristics include blood volume, fabric composition, detergent type, and water temperature used during laundering. This study focused on investigating the impact of fabric thickness on bloodstain washing using cotton fabrics. Nine fabrics of differing thicknesses, all 100% cotton, were selected. 100 μL of blood diluted 100 times in deionized water was deposited on each fabric, and then the samples were washed and dried. Subsequently, the fabrics were treated with acidic hydrogen peroxide (AHP), a bloodstain enhancing reagent, and any remaining blood was observed using a long pass filter (550 nm) under 505 nm light source illumination. The findings revealed that fabric thickness did not significantly influence blood washing characteristics.