Knowledge Mapping and Institutional Prospects on Circular Carbon Economy Based on Scientometric Analysis.

The circular carbon economy is receiving increasing research attention as an essential tool for reducing carbon emissions and mitigating climate change. However, there is no research on the literature distribution and the current situation of the circular carbon economy studies. This paper presents a scientometric analysis of 1452 academic papers on the circular carbon economy and their references from 2010-2021 using the Citespace visualization network.

[Determination of parameter range in detecting Cu of Gannan navel orange by LIBS setup].

In order to improve the precision and sensitivity of laser-induced breakdown spectroscopy device on detecting heavy metal, parameter optimization should be done. After selecting the initial delay time parameter in detecting navel orange experiment of laser-induced breakdown spectroscopy device, a cell range from 1.10 to 1.

[Experimental study on chromium in gannan navel orange by laser-induced breakdown spectroscopy].

It is a relatively new task to apply the laser induced breakdown spectroscopy (LIBS) to fruit samples. To apply LIBS technique in the field related to analysis of trace heavy metal element in fruits samples, we have done primary experiments using Gannan navel orange samples. The authors put the samples into different concentration gradient K2Cr2O7 solution and left it for 30 hours, and then we did the LIBS experiment, discriminated characteristic spectra of chromium element and recorded the peak intensity information.

[Quantitative analysis of Ba and Sr in soil using laser-induced breakdown spectroscopy].

Laser induced breakdown spectroscopy (LIBS) was applied to measure barium and strontium elements in soil. The emission spectrum was emitted as the plasma was cooling off, which was collected and analyzed by fiber spectrometer. Spectral lines of barium (BaII line at 455.