000 03368cam  2200445zi 4500
0019.873249
003CaOODSP
00520221107163848
006m     o  d f      
007cr |||||||||||
008190517s1989    onca   #ob   f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
041 |aeng|bfre
043 |ae-sz---
0861 |aEn13-5/89-05E-PDF
1001 |aLeppard, Gary G., |eauthor.
24510|aColloidal iron oxyhydroxy-phosphate : |bthe sizing and morphology of an amorphous species in relation to partitioning phenomena / |cGary G. Leppard, R.R. De Vitre, D. Perret and J. Buffle.
264 1|aBurlington, Ontario, Canada : |bNational Water Research Institute, Lakes Research Branch, Canada Centre for Inland Waters, |c[1989]
300 |a1 online resource (15 pages, 1 unnumbered page) : |billustrations.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aNWRI contribution ; |v89-05
500 |aTitle from cover.
500 |aDigitized edition from print [produced by Environment and Climate Change Canada].
504 |aIncludes bibliographical references.
5203 |a"An iron-rich fraction was isolated from a small eutrophic lake and studied on a particle-specific basis by (1) conventional transmission electron microscopy (TEM) and (2) scanning transmission electron microscopy in conjunction with energy-dispersive spectroscopy (STEM/EDS). Additionally, the fraction per se was characterized by classical wet chemistry. A morphologically distinctive particulate was discovered to be rich in Fe (in an X-ray amorphous form) and P (as phosphate), and it also contained some Ca. Particle sizes determined by TEM fell entirely into the colloidal range, with a great majority of those trapped by a cutoff filter of 0.45 um showing a mean diameter below 0.13 um. Several morphotypes could be identified at 3 nm resolution in ultrathin sections of plastic-embedded colloid fractions. New technology transferred from the biomedical sciences was used to obtain ca. 1 nm resolution, and revealed (1) irregular arrays of subunits with a least diameter approaching the resolution limit and (2) many varieties of the principal morphotypes. A range of 130 nm down towards the molecular range was found to be more representative of the true particle size distribution than one derived solely from filtration data based on filter pore sizes. Size distributions established by cascade filtration assessments are shown to be related to colloid aggregation phenomena which may affect phosphate partitioning between the operationally-defined solid and soluble phases"--Abstract.
546 |aIncludes abstract in English and French.
69207|2gccst|aWater pollution
69207|2gccst|aMetals
69207|2gccst|aMeasurement
7001 |aDe Vitre, Richard R., |eauthor.
7001 |aPerret, Didier, |eauthor.
7001 |aBuffle, J. |q(Jacques), |d1943- |eauthor.
7101 |aCanada. |bEnvironment Canada.
7102 |aNational Water Research Institute (Canada). |bLakes Research Branch.
7102 |aCanada Centre for Inland Waters.
830#0|aNWRI contribution ;|v89-05.|w(CaOODSP)9.844121
85640|qPDF|s1.33 MB|uhttps://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-89-05-eng.pdf