Insight into the relationship between metabolic enzymes and oxadiazon degradation in Oryza sativa for reducing environmental risks.

Oxadiazon (ODZ) is extensively utilized in agricultural fields for weed control owing to its strong effectiveness. However, excessive loading of ODZ in water bodies and agricultural soils can lead to various environmental concerns. Therefore, it is crucial to understand the ODZ metabolic process and associated mechanisms in crops to assess the likelihood of ODZ contamination in the environment.

[Determination of trace Au in mine sample by inductively coupled plasma atomic emission spectroscopy].

A method for the determination of trace gold by inductively coupled plasma atomic emission spectrometry (ICP-AES) in mine sample was proposed. The instrument parameters were optimized and the media of solution and interferences were studied systemically. The results showed that in less than 10% (phi) aqua regia medium, the acids had no influences on the determination, and after removing common cations in mineral samples by using 10% hydrochloric acid(phi), the residual matrix elements had no effect on the determination of Au with ICP-AES.

[Correction of spectral interferences with mutual interference coefficient matrix for determination of impurities in Bi-based superconductor powder by inductively coupled plasma emission spectrometry].

In the present paper a method was proposed for the determination of Fe, Cr, Ni, Si, Al and Ba in Bi-based superconductor powder (BSCCO, Bi(2-x), Pb(x)Sr2Ca2Cu3O8) by inductively coupled plasma atomic emission spectrometry(ICP-AES). The operation parameters for ICP-AES were optimized, and the influences of acid kind and concentration were examined. The interferences of matrix elements Bi, Sr, Pb, Ca and Cu in Bi-based superconductor powder on the determination of impurities were studied systematically.