Assessment of preparation methods for organic phosphorus analysis in phosphorus-polluted Fe/Al-rich Haihe river sediments using solution 31P-NMR.

The validated method was applied to the determination of 4-NP in surface water samples from the Guandu basin (Guandu River and affluents), in the metropolitan region of Rio

The objective of this study was to predict the levels of organic carbon (OC), clay, and extractable phosphorus (P), from the spectral responses of soil samples in the visible and

Based on the analysis of the descriptive statistics of data for WQI, as shown in Table 4, it was found that the first site of the river, located at its upper course, showed

Suspended sediment concentration, total phosphorus content (Total-P), total organic carbon (TOC), and proportion of organic (Organic-P) and inorganic (Inorganic-P) P in relation to

The objectives of this paper were therefore to quantitatively assess soil physical quality from data collected in the Haihe River Basin, investigate the effects of

So the purpose of this study was to develop and validate practical and simple analytical methods for ametryn determination in river water, river sediment and in the bivalve

Arsenic and mercury determinations were accomplished in 28 sediment samples from the São Francisco River Basin, Minas Gerais, Brazil.. For sample pretreatment were employed

The influencing parameters of VA-HF-LPME sample preparation method, such as organic solvents (acceptor phase), pH of sample solution (donor phase), sample volume, concentration