Menai Straits

Truesdale and Smith [80] also carried out a comparative study of the determination of iodate in open ocean, inshore Irish seawaters and waters from the Menai Straits, using the spectrophotometric method (with and without pre-oxidation using iodine water) and also by a polarographic method [82]. 

Van den Berg [131] used this technique to determine nanomolar levels of nitrate in seawater. Samples of seawater from the Menai Straits were filtered and nitrite present reacted with sulfanilamide and naphthyl-amine at pH 2.5. The pH was then adjusted to 8.4 with borate buffer, the solution de-aerated, and then subjected to absorptive cathodic stripping voltammetry. The concentration of dye was linearly related to the height of the reduction peak in the range 0.3-200 nM nitrate. The optimal concentrations of sulfanilamide and naphthyl-amine were 2 mM and 0.1 mM, respectively, at pH 2.5. The standard deviation of a determination of 4 nM nitrite was 2%. The detection was 0.3 nM for an adsorption time of 60 sec. The sensitivity of the method in seawater was the same as in fresh water. 

Trondheimsfjord Flardangerfjord United Kingdom locations Menai Straits Dulas Bay... 

Plume, England Menai Strait, Wales Spring 1 m WW 25-800 0-450 ... 

Foster, P. and Morris, A. W. (1971). The seasonal variation of dissolved ionic and organically associated copper in the Menai Straits. Deep-Sea Res. 18, 231-236. 

Morris, A. W. (1974). Seasonal variation of dissolved metals in inshore waters of the Menai Straits. Mar. Pollut. Bull. 5, 54-59. 

Fig. 4. Normalized distribution of organically associated copper expressed as a percentage of the total copper in the eastern Pacific Ocean (Williams, 1969) and the Menai Straits (Foster and Morris, 1971).

Britannia bridge, Menai Strait,1826, by Robert Stephenson (1803-1859)... 

Kratzer, S., Bowers, D., and Tett, RB. (2000). Seasonal changes in colour ratios and optically active constituents in the optical Case-2 waters of the Menai Strait, North Wales. Int. J. Remote Sens., 21(11), 2225-2246. 

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