Track topics on Twitter Track topics that are important to you
Density of microplastics has been regarded as the primary property that affect the distribution and bioavailability of microplastics in the water column. For measuring the density of microplastis, we developed a simple and rapid method based on density gradient solutions. In this study, we tested four solvents to make the density gradient solutions, i.e., ethanol (0.8 g/cm), ultrapure water (1.0 g/cm), saturated NaI (1.8 g/cm) and ZnCl (1.8 g/cm). Density of microplastics was measured via observing the float or sink status in the density gradient solutions. We found that density gradient solutions made from ZnCl had a larger uncertainty in measuring density than that from NaI, most likely due to a higher surface tension of ZnCl solution. Solutions made from ethanol, ultrapure water, and NaI showed consistent density results with listed densities of commercial products, indicating that these density gradient solutions were suitable for measuring microplastics with a density range of 0.8-1.8 g/cm.
This article was published in the following journal.
Name: The Science of the total environment
Worldwide the seafloor has been recognized as a major sink for microplastics. However, currently nothing is known about the sediment microplastic pollution in the North Pacific sector of the Arctic Oc...
Uptake and toxicity of microplastics on marine organisms have been reported elsewhere. However, there is limited knowledge regarding the ecological effects of microplastics on marine organisms. In thi...
Microplastics are one of the most significant pollutants in the marine environment and accumulate in sediments all over the world. To assess the pollution level in the marine environment in China, the...
An efficient Rh(III)-catalyzed redox-neutral method for the direct C8- arylation of quinoline N-oxides using diazonaphthalen-2(1H)-one as coupling partner has been demonstrated. The developed method i...
Microplastics have become a major concern in recent years as they can be recognized as the transport vectors for pollutants in environment. In this study, the sorption behavior of two phthalate esters...
Following the retrospective study ont he effectiveness of the microdose method of IT morphine therapy, the investigators are interested in measuring the sensory changes at 4 time points du...
The aim of the study was to develop a low cost, clinically easy to use measurement method with the Leap motion sensor for objectively evaluating range of motion (ROM), and to investigate t...
A randomised interventional comparative control study will be undertaken to compare the THEYA Recovery Range postoperatively for patients undergoing wider lumpectomies, partial mastectomie...
The aim of this study is to calculate the plasma apparent volume of distribution of natural folate to give a more accurate value for use in a mathematical model of apparent folate absorpti...
Range of motion at ankle joint and subtalar joint will be assessed before and after utilization of ARM device. The changes in range of motion will be recorded and compared to literature.
A technique of measuring the dielectric properties of materials, which vary over a range of frequencies depending on the physical properties of the material. The technique involves measuring, over a range of frequencies, ELECTRICAL IMPEDANCE and phase shift of an electric field as it passes through the material.
A noninvasive method for assessing BODY COMPOSITION. It is based on the differential absorption of X-RAYS (or GAMMA RAYS) by different tissues such as bone, fat and other soft tissues. The source of (X-ray or gamma-ray) photon beam is generated either from radioisotopes such as GADOLINIUM 153, IODINE 125, or Americanium 241 which emit GAMMA RAYS in the appropriate range; or from an X-ray tube which produces X-RAYS in the desired range. It is primarily used for quantitating BONE MINERAL CONTENT, especially for the diagnosis of OSTEOPOROSIS, and also in measuring BONE MINERALIZATION.
A technique used to separate particles according to their densities in a continuous density gradient. The sample is usually mixed with a solution of known gradient materials and subjected to centrifugation. Each particle sediments to the position at which the gradient density is equal to its own. The range of the density gradient is usually greater than that of the sample particles. It is used in purifying biological materials such as proteins, nucleic acids, organelles, and cell types.
Method of measuring performance against established standards of best practice.
The measurement of the density of a material by measuring the amount of light or radiation passing through (or absorbed by) the material.