We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
A simple method for quantifying microplastics in water utilizing hydrophobic dyes via ultraviolet-visible spectrophotometry.
AI summary Read the abstract
Scientists developed a faster, simpler way to measure tiny plastic particles (microplastics) in water by using a dye that sticks to the plastic and then measuring it with a light-based instrument. This method worked reliably even in real tap and lake water, which matters because better detection tools could help researchers track how much plastic is contaminating the water we drink—an important step toward understanding potential health risks down the road.
Polystyrene microplastics have emerged as a global environmental concern due to their widespread distribution and potential risks to ecosystems and human health. Accurate quantification of microplastics in water matrices remains challenging due to the limitations of conventional detection methods. This study adapted an incremental modification staining-spectrophotometry method for the quantitative detection of microplastic concentration in water, based on the adsorption of hydrophobic dyes onto the surface of microplastics, combined with UV-vis spectrophotometry. Under optimal conditions (pH = 7, room temperature, 1 µm polystyrene microplastics, deionized water, no interferents), there was a good linear relationship between absorbance and polystyrene microplastic concentration in the range of 5-100 mg L, with a correlation coefficient () of 0.9933, a limit of detection of 0.76 mg L, and a spike recovery rate of 108.65%. Furthermore, the method exhibited strong anti-interference capability, retaining good linearity ( > 0.99) and recovery rates (>95%) under various environmental conditions, including temperatures of 25 °C and 45 °C, pH values of 3, 7, 11, and 13, and the presence of common coexisting ions (Ca, Na, K, SO, CO, and Cl). Satisfactory linearity was also achieved in real water matrices such as tap water and lake water. Characterization using optical microscopy, scanning electron microscopy, and Fourier-transform infrared spectroscopy confirmed that the staining process involves physical adsorption without altering the chemical structure or morphology of the polystyrene microplastics. Compared with conventional methods, this approach offers advantages including operational simplicity, high sensitivity, good linearity, and strong environmental adaptability, making it a promising tool for rapid quantitative detection of small-sized polystyrene microplastics in water.
More Papers Like This
Rapid and reliable detection of microplastics in drinking water using fluorescence microscopy
AI summary Read the abstract
Researchers developed a fluorescence-based method for rapid detection and quantification of microplastics in drinking water, addressing the need for faster and more practical monitoring tools. The method achieved high sensitivity and allowed polymer discrimination without requiring expensive spectroscopic instrumentation.
A portable UV–vis spectroscopic platform for the detection and quantification of polyethylene microplastics
AI summary Read the abstract
Scientists built a low-cost, portable device that can detect and measure tiny plastic particles (polyethylene, a common plastic) in water using light absorption, working about as well as expensive lab equipment. This matters because microplastics in our water supplies are a growing health concern, and cheaper, easier testing tools could make it more practical to monitor water quality for these contaminants outside specialized labs. The device is still lab-tested only, so more work is needed before it can check real-world water sources like rivers or tap water.
An Innovative Approach for Direct Identification of Microplastics in Freshwater Samples Using SWIR Hyperspectral Imaging
AI summary Read the abstract
Scientists have developed a faster, chemical-free way to detect tiny plastic particles in river water by using a special camera that "reads" light patterns to identify different types of plastic. This matters because current testing methods are slow and require harsh chemicals, so a quicker, more eco-friendly technique could help researchers track microplastic pollution more widely, giving us better data on how much plastic is in our water supplies and, ultimately, in the water we drink.
UV-Triggered Chemiluminescence as a Bulk Surrogate Indicator for Microplastic Contamination in Aquatic Matrices
AI summary Read the abstract
Scientists developed a fast, cheap test that uses light-triggered chemical reactions to estimate microplastic pollution in water, taking just minutes instead of the hours or days current methods require. This matters because quicker, more accessible testing could help track plastic contamination in our drinking water, streams, and wastewater more widely—an important step toward understanding how much of this pollution we might be exposed to. The method isn't perfect yet (certain minerals in water can throw off results), but it offers a promising shortcut for screening lots of water samples for plastic contamination.
Quantitative Detection of Microplastics in Water through Fluorescence Signal Analysis
AI summary Read the abstract
Researchers developed an automatic, portable fluorescence-based system for quantitative detection of microplastics in water, using dye-stained particles flowing through a laser beam to enable fast and objective counting without manual microscopy.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.