The patent application discloses a method for nondestructively determining information of an element disposed within a polymer body comprising a cure system extending continuously throughout. The method comprises the steps of directing x-rays onto a surface of the body, wherein the x-rays are directed through the body, and wherein target atoms in the cure system of the polymer body emit x-ray fluorescence; and receiving the x-ray fluorescence and determining composition information of the cure system within the body.

Proposed is a method of analyzing microplastic particles in a water system. The method includes providing raw water containing microplastic particles, freezing and thawing the raw water at least once to generate microplastic aggregates in the raw water, recovering the microplastic aggregates, and analyzing the recovered microplastic aggregates. According to the method, the microplastic particles are precipitated in the water system without the use of an additional coagulant, whereby the effect of coagulants on the subsequently recovered microplastic aggregates may be ruled out. In addition, the process configuration is simple because the aggregates can be separated from the supernatant without using any additional treatment process.

A compression moulding machine comprises: an extrusion unit configured to extrude a rod of pasty polymeric material; a cutting element, configured to portion the rod into individual charges; a rotary carousel, including a plurality of moulds, each mould being configured to receive a respective charge and to form a corresponding object from the charge; a feeder, configured to convey each charge to a respective mould at a feed position; an inspecting device, configured to capture inspection data, representing a composition of the rod or of the charges.

Provided are an X-ray fluorescence analysis method and a sample pouch cell that enable measurement of a liquid sample, and radiation of X-rays while avoiding air bubbles formed during measurement. The sample pouch cell is a sample pouch cell for a liquid sample, which is to be arranged upright in a side-irradiation type X-ray fluorescence spectrometer. The sample pouch cell includes: a first resin film, which is arranged on a side to which primary X-rays are radiated; and a second resin film bonded to the first resin film in a region excluding an inlet for the liquid sample.