Determination of Cobalt in Seawater Using Neutron Activation Analysis after Preconcentration by Adsorption onto γ-MnO₂ Nanomaterial

Table 5

Content of cobalt in the seawater at some areas in the world obtained within the same and/or different analytical methods. Here GFAAS and SF-ICP-MS stand for graphite furnace atomic absorption and sector field inductively coupled plasma mass spectrometers, respectively.

Area	DCo (μg/L)	Analytical methods	Ref.
Mediterranean Sea	0.02	SF-ICP-MS	[19]
Bosphorus	4.28	GFAAS	[20]
South East Atlantic	0.30⋅10^−3–3.48⋅10^−3	Flow-Injection Analysis (FIA) and chemiluminescence	[21]
Crozet Islands, Southern Ocean	1.42⋅10^−3–2.89⋅10^−3	ICP-MS	[22]
Western Atlantic Ocean	0.83⋅10^−3–5.85⋅10^−3	Chemiluminescence	[23]
North Atlantic gyre, Atlantic Ocean	1.38⋅10^−3	FIA with chemiluminescence	[24]
South Atlantic gyre, Atlantic Ocean	3.25⋅10^−3	FIA with chemiluminescence	[24]
Angola Gyre, Atlantic Ocean	0.71⋅10^−3–9.74⋅10^−3	Ultrahigh resolution mass spectrometry	[25]
Binh Thuan, Vietnam	0.25	NAA	This study