Published July 11, 2023 | Version v1
Journal article Open

The Concentrations of Heavy Metals (Ni, Cd, Cu, As and Pb) from the Selected Sampling Points along River Molo Wood Treatment Sites

Description

Humans and hydrological systems interact at
the point where water resources are managed, and this
has profound effects on human settlement patterns and
economic growth.. The wood treatment plants around
Nakuru County area accumulated over time could pose
serious health problems to the residents living around
River Molo and its environs. Wood treatment could
contribute heavily on the accumulation of heavy metals.

Therefore, research on the determination of physico-
chemical characteristics, Geochemical speciation of

heavy metals and heavy metals in water and soils from
River Molo is very important.Water and soil samples
will be gatheredduring dry and wet seasons from the
selected sampling points. The water samples will be
analyzed fordissolved oxygen, temperature, dissolved
solids, electrical conductivity , PH and heavy metals (Pb,
Ni, Hg, As and Cd) using Atomic Absorption
Spectrophotometry and scanning electron microscopy
(SEM) . Atomic Absorption Spectrophotometry (AAS)
with Perkin-Elmer 3000 was used for analysis of heavy
metals. Lead (Pb) concentration ranged between 0.06 -
10.24 mgkg-1

, Cd was within the range of 0.04-0.57 mgkg-
1

, Ni concentration ranged between 0.29-30.24 mgkg-1
,

and Zn between 0.1-91.58 mgkg-1

in water from the
Nakuru County. Concentrations ofPb and Cd were
higher than the m permissible limits stipulated by the
World Health Organization (WHO) and other
international set standards.

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